Receipt of Glucagon-Like Peptide-1 Receptor Agonists Among Rural Patients with Obstructive Sleep Apnea and Excess Weight
Abstract
Rationale: Successful weight loss is difficult for those with obstructive sleep apnea (OSA), and gaps in weight management care are more pronounced in rural areas. Glucagon-Like Peptide-1 Receptor Agonists (GLP-1RAs) are promising agents to improve the effectiveness of weight management care in patients with OSA and excess weight living in rural areas.
Integrity signals
Registry
Cites
Statistics
Claims the paper makes
19 of 34 cited sources checked · 8 supported · 1 flagged · accuracy not yet measured
- Premisecitation
GLP-1RAs allow most patients to achieve clinically meaningful weight loss.
“These medications allow most patients to achieve clinically meaningful weight loss, improve severity of OSA, and improve cardiometabolic comorbidities.13,14”
Quote in the paperSubstantial claim2 of 2 sources checked- cites [13] Blackman, 2016, Effect of liraglutide 3.0 mg in individuals with obesity and moderate or severe obstructive sleep apnea: the SCALE sleep apnea randomized clinical trial, Int J Obes (Lond) source
The Results section (Body weight and related end points; page unavailable) reports that 46.3% of liraglutide-treated participants lost at least 5% of baseline weight at week 32—fewer than most. The trial also studied one GLP-1 receptor agonist in participants with obesity and moderate or severe OSA, not the drug class across patients generally. (LLM, conf=0.87)
Checked by a reasoning model — may be wrong.
Experimental — accuracy not yet measured - cites [14] Malhotra, 2024, Tirzepatide for the treatment of obstructive sleep apnea and obesity, N Engl J Med source
The ‘Change in PROs and Cardiovascular Risk Factors’ section (page unavailable) reports significant body-weight reductions in both trials, and Table 2 (page unavailable) reports a 17.7% estimated reduction for one tirzepatide group. The paper does not establish that most individual patients achieved clinically meaningful weight loss, and its trials tested tirzepatide in adults with obesity and moderate-to-severe OSA rather than GLP-1 receptor agonists generally. (LLM, conf=0.84)
Experimental — accuracy not yet measured
- Premisecitation
Gaps in weight management care are more pronounced in rural areas.
“gaps in weight management care are particularly pronounced in rural areas.”
- Also stated in: § Rationale: · plain
“gaps in weight management care are more pronounced in rural areas.”
Quote in the paperSubstantial claim1 of 2 sources checked- cites [9] Thomas, 2024 source
The Key Drivers and Conclusion section (page not provided) says rural areas often have less accessible medical care and reports higher obesity rates. It does not specifically compare gaps in weight-management care between rural and urban areas, so the claim is more specific than the source supports. (LLM, conf=0.82)
Experimental — accuracy not yet measured - cites [10] Krishna, 2010, Diabetes burden and access to preventive care in the rural United States, J Rural Health Off J Am Rural Health Assoc Natl Rural Health Care Assoc source
- Also stated in: § Rationale: · plain
- Premisecitation
Patients with obstructive sleep apnea lose less weight than their peers.
“Patients with OSA lose less weight than their peers, even though studies suggest that patients with OSA may demonstrate greater engagement with lifestyle-based weight management programs.7,8”
Quote in the paperSubstantial claim2 of 2 sources checked- cites [7] Kline, 2018, Bidirectional relationships between weight change and sleep apnea in a behavioral weight loss intervention, Mayo Clin Proc source
- cites [8] Littman, 2012, Evaluation of a weight management program for veterans, Prev Chronic Dis source
The Results > Reach section reports that veterans with sleep apnea were more likely to participate in the weight-management program. The Discussion says participants with more comorbidities were less likely to lose at least 5% of their weight, but it does not establish that patients with sleep apnea specifically lost less weight than their peers. (LLM, conf=0.85)
Experimental — accuracy not yet measured
- Premisecitation
Rural Americans are less likely to receive healthcare to address obesity-related burdens.
“Over 46 million Americans live in rural areas and carry a disproportionate burden of obesity-related comorbidities but are less likely to receive healthcare to address these burdens.9,10”
Quote in the paperSubstantial claim1 of 2 sources checked- cites [9] Thomas, 2024 source
The Key Drivers and Conclusion section says rural areas often have limited medical treatment and less accessible healthcare options, and separately reports higher obesity rates. It does not establish that rural Americans are less likely to receive care specifically for obesity-related burdens; that part is more specific than the source supports. (LLM, conf=0.84)
Experimental — accuracy not yet measured - cites [10] Krishna, 2010, Diabetes burden and access to preventive care in the rural United States, J Rural Health Off J Am Rural Health Assoc Natl Rural Health Care Assoc source
- Premisecitation
Rural patients with obstructive sleep apnea receive fewer weight management services than urban peers.
“We previously have shown that rural patients with OSA receive fewer weight management services (lifestyle programs, nutrition consults, pharmacotherapy, and bariatric surgery) in comparison to urban peers”
Quote in the paperSubstantial claim1 of 1 sources checked- cites [12] Leonhard, 2025, Receipt of weight management services among patients with OSA and obesity, CHEST Pulm. source
- Premisecitation
GLP-1RAs improve the severity of obstructive sleep apnea.
“These medications allow most patients to achieve clinically meaningful weight loss, improve severity of OSA, and improve cardiometabolic comorbidities.13,14”
Quote in the paperSubstantial claim2 of 2 sources checked- cites [13] Blackman, 2016, Effect of liraglutide 3.0 mg in individuals with obesity and moderate or severe obstructive sleep apnea: the SCALE sleep apnea randomized clinical trial, Int J Obes (Lond) source
The Results (Polysomnography end points; page not supplied) report a significantly greater reduction in apnea–hypopnea index with liraglutide 3.0 mg than with placebo after 32 weeks. This supports improved OSA severity for that treatment in participants with obesity and moderate or severe OSA, but the trial does not establish the effect for GLP-1 receptor agonists as a class. (LLM, conf=0.86)
Experimental — accuracy not yet measured - cites [14] Malhotra, 2024, Tirzepatide for the treatment of obstructive sleep apnea and obesity, N Engl J Med source
The Discussion reports a clinically relevant reduction in obstructive sleep apnea severity with tirzepatide versus placebo in adults with moderate-to-severe OSA and obesity. Tirzepatide activates both GIP and GLP-1 receptors, so this supports the claim for that medication and population, but not for GLP-1 receptor agonists as a class. (LLM, conf=0.85)
Experimental — accuracy not yet measured
- Premisecitation
GLP-1RAs improve cardiometabolic comorbidities.
“These medications allow most patients to achieve clinically meaningful weight loss, improve severity of OSA, and improve cardiometabolic comorbidities.13,14”
Quote in the paperSubstantial claim2 of 2 sources checked- cites [13] Blackman, 2016, Effect of liraglutide 3.0 mg in individuals with obesity and moderate or severe obstructive sleep apnea: the SCALE sleep apnea randomized clinical trial, Int J Obes (Lond) source
The Results section ('Glycemic control and cardiometabolic parameters') reports that liraglutide improved HbA1c, fasting glucose, and systolic blood pressure compared with placebo. This supports improvement in some cardiometabolic risk measures in this trial, but does not establish that GLP-1RAs as a class improve cardiometabolic comorbidities; the same section found no significant improvement in fasting lipids or urinary albumin:creatinine ratio. (LLM, conf=0.83)
Experimental — accuracy not yet measured - cites [14] Malhotra, 2024, Tirzepatide for the treatment of obstructive sleep apnea and obesity, N Engl J Med source
The Results section (“Change in PROs and Cardiovascular Risk Factors”; page not provided) reports that tirzepatide reduced systolic blood pressure and hsCRP in adults with obstructive sleep apnea and obesity. These are improvements in cardiometabolic risk factors, but the paper does not establish improvement in diagnosed comorbidities or show that the result applies to GLP-1 receptor agonists as a class. (LLM, conf=0.84)
Experimental — accuracy not yet measured
- Findingown data
Adjusted models with fewer covariates produced results similar to the fully adjusted model.
“Adjusted models with fewer covariates demonstrated similar trends (Models 1–3). The addition of comorbidities in model 2 and health system factors in model 3 yielded almost identical results to the final model.”
Quote in the paperNot a substantial claim - Findingown data
In a sensitivity analysis adjusting for index year, rural patients had lower odds of GLP-1RA receipt than urban patients (OR 0.85; 95% CI 0.73-0.99).
“In the sensitivity analysis that accounted for index year as an adjustment variable, rural patients continued to demonstrate lower receipt of GLP-1RAs as compared to urban patients (OR 0.85; 95% CI 0.73–0.99).”
Quote in the paperSubstantial claim - Findingown data
The study cohort included 68,680 patients who met inclusion criteria between January 1, 2018, and August 1, 2023.
“There were 68,680 patients identified within the VA CDW from January 1, 2018, to August 1, 2023 who met inclusion criteria.”
- Also stated in: § Results: · plain
“Of the 68,680 patients meeting inclusion criteria from 1/1/2018 to 8/1/2023, 26.0% lived in a rural area, and 74.0% lived in an urban area.”
Quote in the paperSubstantial claim - Also stated in: § Results: · plain
- Findingown data
The proportion of patients receiving a GLP-1RA increased from about 4% in 2018 to about 15% in 2023 for both rural and urban patients.
“From 2018 to 2023, this proportion increased for both rural and urban patients, with ~4% of patients from 2018 receiving a GLP-1RA to ~15% of patients in 2023 receiving a GLP-1RA approved for chronic weight loss (Figure 2).”
Quote in the paperNot a substantial claim - Findingown data
Among patients with diabetes, the odds ratio for GLP-1RA receipt for rural versus urban residence was 0.91 (95% CI 0.83-1.00).
“The odds ratio for the receipt of a GLP-1RA among rural patients with diabetes as compared to urban was 0.91 (95% CI 0.83–1.00; Appendix 3, Model 4).”
Quote in the paperSubstantial claim - Findingown data
The intraclass coefficient across models ranged from 0.059 to 0.070, indicating that site accounted for 5.9% to 7.0% of variability in the exposure-outcome association.
“The intraclass coefficient among all models ranged from 0.059–0.070, indicating that the random intercept (patient’s site) accounted for only 5.9–7.0% of the variability in the association between exposure and outcome.”
Quote in the paperNot a substantial claim - Findingown data
After adjustment for confounders, rural residence was associated with about 10% lower odds of receiving a GLP-1RA compared with urban residence (OR 0.91; 95% CI 0.83-0.99).
“After accounting for demographic, medical history, and other health system related confounders in our fully adjusted model (Model 4), we found that patients with a rural home address had almost 10% lesser odds of receiving GLP-1RAs in comparison to their urban peers (OR 0.91; 95% CI 0.83–0.99; Table 2).”
- Also stated in: § Results: · plain
“Rural residents had ~10% lesser odds of receipt of a GLP-1RA approved for chronic weight loss in comparison to urban peers, after adjusting for confounders.”
Quote in the paperSubstantial claim - Also stated in: § Results: · plain
- Findingown data
In the year after index, 8.4% of rural patients and 7.9% of urban patients received a GLP-1RA.
“Among the 17,880 rural patients, 1,502 (8.4%) received a GLP-1RA approved for chronic weight loss in the year after index date. Of the 50,800 urban patients, 4,006 (7.9%) received a GLP-1RA in the year after OSA diagnosis.”
Quote in the paperSubstantial claim - Findingown data
Among patients without diabetes, the odds ratio for GLP-1RA receipt for rural versus urban residence was 0.89 (95% CI 0.75-1.05).
“Among those without diabetes, the odds ratio for the receipt of a GLP-1RA among rural patients as compared to urban was 0.89 (95% CI 0.75–1.05, Appendix 4, Model 4).”
Quote in the paperNot a substantial claim - Findingown data
Overall, 8.0% of the cohort received a GLP-1RA approved for chronic weight loss in the year after the index date.
“Overall, 8.0% received a GLP-1RA in the year after index date.”
- Also stated in: § Discussion/Conclusions: · plain
“Among patients with OSA and excess weight participating in a lifestyle program for weight loss, 8.0% received a GLP-1RA approved for chronic weight loss in the year after index date.”
Quote in the paperNot a substantial claim - Also stated in: § Discussion/Conclusions: · plain
- Findingown data
Drive distance and drive time to primary and specialty care did not significantly mediate the association between rurality and GLP-1RA receipt.
“Drive distance and drive time to primary and specialty care did not mediate this association.”
- Also stated in: § Results: · plain
“In the mediation analysis of geographic variables, we did not identify any significant effect mediated through drive distance to primary care, drive time to primary care, drive distance to specialty care, or drive time to specialty care (Table 3).”
Quote in the paperSubstantial claim- The authors state this as an assumption: Drive distance and drive time to primary and specialty care are mediators of the effect of rurality on GLP-1RA receipt.
- Rests on an assumption: There is no unmeasured confounding of the exposure-outcome, exposure-mediator, and mediator-outcome relationships in the mediation analysis.
- Rests on an assumption: Rural residence has a causal effect on GLP-1RA receipt that can be decomposed into direct and indirect effects.
- Rests on an assumption: Drive time and drive distance accurately measure geographic access to care.
- Also stated in: § Results: · plain
- Findingown data
The interaction between rural home address and index year was not significantly associated with change in GLP-1RA receipt over time (OR 1.02; 95% CI 0.98-1.06).
“Inclusion of an interaction term between rural home address and index year did not demonstrate significant change in the association between rurality and GLP-1RA receipt over time (OR for interaction by year; 1.02; 95% CI 0.98–1.06).”
Quote in the paperNot a substantial claim - Premisecitation
Rural areas lack integrated obstructive sleep apnea specialty care.
“While primary care services are present in these areas, there is a lack of integrated OSA specialty care.”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [11] Donovan, 2020, Redesigning care for OSA, Chest source
- Premisecitation
Sleep medicine and weight management specialists are predominantly located in urban areas.
“Sleep medicine and weight management specialists are predominantly located in urban areas that are geographically and culturally distant from rural areas.11”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [11] Donovan, 2020, Redesigning care for OSA, Chest source
- Interpretationown data
Within the Veterans Health Administration, geographic access measured by drive time and drive distance does not explain the lower GLP-1RA receipt among rural patients.
“This would suggest that, at least within the VHA, the geographic domain of access as measured through drive time and drive distance to care sites is not responsible for the lower receipt of these medications among rural patients.”
Quote in the paperSubstantial claim- The authors state this as an assumption: Drive distance and drive time to primary and specialty care are mediators of the effect of rurality on GLP-1RA receipt.
- Rests on an assumption: There is no unmeasured confounding of the exposure-outcome, exposure-mediator, and mediator-outcome relationships in the mediation analysis.
- Rests on an assumption: Rural residence has a causal effect on GLP-1RA receipt that can be decomposed into direct and indirect effects.
- Rests on an assumption: Drive time and drive distance accurately measure geographic access to care.
- Interpretationown data
The rural-urban difference in GLP-1RA receipt is modest in magnitude.
“While this difference is modest in magnitude, the receipt of GLP-1RAs increased over the years of this cohort”
Quote in the paperSubstantial claim - Premisecitation
In real-world settings, only 20% of patients with obstructive sleep apnea who enroll in a lifestyle program achieve clinically meaningful weight loss.
“In real world settings, only 20% of patients with OSA who enroll in a lifestyle program achieve clinically meaningful weight loss.44”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [44] Janney, 2016, The influence of sleep disordered breathing on weight loss in a national weight management program, Sleep source
- Premisecitation
Within the Veterans Health Administration, participation in a lifestyle-based weight management program is required for use of weight management medications, including GLP-1RAs.
“Within the VHA, participation in a lifestyle-based weight management program is a further requirement for use of weight management medications, including GLP-1RAs.”
Quote in the paperSubstantial claim0 of 4 sources checked- cites [23] ZEPBOUND (tirzepatide) injection, 2023
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
- cites [24] WEGOVY (semaglutide) injection, for subcutaneous use, 2023
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
- cites [25] VA Pharmacy Benefits Management Services and National Formulary Committee, 2024
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
- cites [26] VA Pharmacy Benefits Management Services and National Formulary Committee, 2023
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
- Study design and conductreasoning
Universal coverage for medical services and prescriptions within the Veterans Health Administration limits generalizability of the findings to other health system structures and insurance coverage types.
“Third, while universal coverage for medical services and prescriptions within the VHA is a major strength in our analysis, it also limits generalizability of the findings to other health systems structures and insurance coverage types.”
Quote in the paperNot a substantial claim - Study design and conductown data
Other important social determinants of health, such as income and education, were not available in the data set.
“While universal coverage may improve access, it is important to note that other important social determinants of health (income, education) were not available in this data set.”
Quote in the paperSubstantial claim - Interpretationreasoning
The cost incentive for VHA lifestyle programs likely limited inadvertent exclusion of patients from the cohort.
“This cost incentive likely limited any inadvertent exclusion of patients from our cohort.”
Quote in the paperSubstantial claim - Study design and conductreasoning
The Veterans Health Administration collects nationwide electronic health record and administrative data that allow excellent capture of the variables included in the analysis.
“In addition, the VHA collects nationwide electronic health record and administrative data, allowing for excellent capture of variables included in the analysis.”
Quote in the paperSubstantial claim - Study design and conductreasoning
The analysis could not include important factors that may affect GLP-1RA receipt, such as availability of endocrinology and local prescribing restrictions.
“While we attempted to account for system level determinants through the use of the Clinical Complexity Index and including clinical site as a random intercept, we were not able to include important factors that may affect receipt of GLP-1RAs, such as availability of endocrinology and local prescribing restrictions.”
Quote in the paperNot a substantial claim - Study design and conductcitation
Centralized medication purchasing and distribution within the Veterans Health Administration may limit differential rural versus urban effects of GLP-1RA drug shortages.
“Finally, the centralized medication purchasing and distribution within the VHA may help to limit differential rural vs urban effects of drug shortages of GLP-1RAs.57”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [57] Putka, 2023
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
- Study design and conductreasoning
Cohort entry was restricted to participation in lifestyle programs within the Veterans Health Administration.
“Finally, it should be noted that we limited the entry criteria for the cohort to participation in lifestyle programs within the VHA.”
Quote in the paperSubstantial claim
- May combine two claims. 11
- Classified as probably not a substantial claim. 9
May combine two claims.
PremisecitationMany patients treated with GLP-1RAs achieve clinically meaningful weight loss and improvements in cardiometabolic health.
“Many patients treated with GLP-1RAs achieve clinically meaningful weight loss while simultaneously demonstrating improvements in cardiometabolic health.45,46”
Quote in the paperSubstantial claim1 of 2 sources checkedProbably not a substantial claim: may not pass S3 (load-bearing).
PremisecitationRural Americans carry a disproportionate burden of obesity-related comorbidities.
“Over 46 million Americans live in rural areas and carry a disproportionate burden of obesity-related comorbidities but are less likely to receive healthcare to address these burdens.9,10”
Quote in the paperNot a substantial claim1 of 2 sources checkedClassified as probably not a substantial claim.
PremisecitationEarly evidence in type II diabetes suggests lower GLP-1RA uptake among rural patients compared with urban patients.
“Early evidence in the management of type II diabetes mellitus suggests lower uptake for GLP-1RAs among patients in rural areas compared with urban peers.17”
Quote in the paperSubstantial claim1 of 1 sources checked- cites [17] Chen, 2024, Geographic variation and racial disparities in adoption of newer glucose-lowering drugs with cardiovascular benefits among US Medicare beneficiaries with type 2 diabetes, PLoS One source
The Results (page unavailable) report that urban Medicare beneficiaries with type 2 diabetes were slightly more likely than rural beneficiaries to initiate a newer glucose-lowering drug. The Methods define that outcome as filling a prescription for either a GLP-1 receptor agonist or an SGLT2 inhibitor, so the reported rural–urban difference does not establish lower uptake of GLP-1 receptor agonists specifically. (LLM, conf=0.86)
Experimental — accuracy not yet measured
May combine two claims.
PremisecitationPharmacotherapy and bariatric surgery can augment weight loss but are rarely received by patients with obstructive sleep apnea.
“While options such as pharmacotherapy and bariatric surgery can augment weight loss, they are rarely received by patients with OSA.12”
Quote in the paperSubstantial claim1 of 1 sources checked- cites [12] Leonhard, 2025, Receipt of weight management services among patients with OSA and obesity, CHEST Pulm. source
Probably not a substantial claim: may not pass S2 (checkable), S3 (load-bearing).
PremisecitationAccess is a multidimensional concept including geographic, temporal, financial, digital, and cultural domains.
“As described by Fortney et. al., access is a multidimensional concept including geographic, temporal, financial, digital, and cultural domains, and barriers to care can be considered within these areas.42”
Quote in the paperNot a substantial claim1 of 1 sources checked- cites [42] Fortney, 2011, A re-conceptualization of access for 21st century healthcare, J Gen Intern Med source
May combine two claims.
PremisecitationGLP-1RAs have relatively few laboratory and clinical monitoring requirements and few contraindications.
“In addition, GLP-1RAs have relatively few requirements for laboratory and clinical monitoring, as well as few contraindications, providing a potentially effective and scalable option to improve the effectiveness of weight management care for patients with OSA living in rural areas.15,16”
Quote in the paperSubstantial claim1 of 2 sources checked- cites [15] Ghusn, 2024, Glucagon-like receptor-1 agonists for obesity: weight loss outcomes, tolerability, side effects, and risks, Obes Pillars source
The Discussion: clinical expert identifies a history of medullary thyroid cancer as a reason treatment may be unsuitable and recommends medical assessment and professional supervision. The Abstract Conclusion calls for vigilant monitoring. Neither passage establishes that laboratory or clinical monitoring requirements are relatively few, or that contraindications are few (searched: laboratory and clinical monitoring requirements; contraindications). (LLM, conf=0.72)
Experimental — accuracy not yet measured - cites [16] Latif, 2025
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
Probably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductcitationA directed acyclic graph was constructed to define a priori assumptions about covariate relationships with exposure and outcome.
“We then constructed a directed acyclic graph (DAG) to clearly define our a priori assumptions regarding covariate relationships with the exposure and outcome variables (Figure 1).29,30”
Quote in the paperNot a substantial claim2 of 2 sources checked- cites [29] Lederer, 2019, Control of confounding and reporting of results in causal inference studies. Guidance for authors from editors of respiratory, sleep, and critical care journals, Ann Am Thorac Soc source
- cites [30] Textor, 2016, Robust causal inference using directed acyclic graphs: the R package ‘dagitty’, Int J Epidemiol source
Probably not a substantial claim: may not pass S3 (load-bearing).
Findingown dataRural areas had a lower proportion of Hispanic patients (5.2% vs 13.2%) than urban areas.
“Rural areas also had a lower proportion of patients of Hispanic ethnicity (5.2% in rural areas vs. 13.2% in urban areas).”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
Findingown dataDrive time and drive distance to primary and specialty care were greater in rural areas than in urban areas.
“As expected, the drive time and drive distance to primary and specialty care were greater in rural areas as compared to urban areas (Table 1).”
Quote in the paperNot a substantial claimMay combine two claims.
Findingown dataIn diabetes-stratified analysis, 15.6% of patients with diabetes and 3.0% of patients without diabetes were prescribed a GLP-1RA.
“In sensitivity analyses stratified by diabetes diagnosis, we found that 15.6% of patients with diabetes (n=27,184) were prescribed a GLP-1RA in comparison to 3.0% of those without diabetes (n=41,496).”
Quote in the paperNot a substantial claimMay combine two claims.
Findingown dataRural areas had a higher proportion of white patients (78.2% vs 56.9%) and a lower proportion of Black patients (13.0% vs 31.6%) than urban areas.
“Rural populations had a higher proportion of patients that were identified as white (78.2% in rural areas vs. 56.9% in urban areas) and lower proportion of patients identified as Black (13.0% in rural areas vs. 31.6% in urban areas).”
Quote in the paperNot a substantial claimMay combine two claims.
Findingown dataAmong the cohort, 26.0% lived in a rural area and 74.0% lived in an urban area.
“Of these, 17,880 (26.0%) lived in a rural area, and 50,800 (74.0%) lived in an urban area.”
Quote in the paperNot a substantial claimMay combine two claims.
PremisecitationThe Veterans Health Administration is the largest integrated health care system in the United States and has national geographic reach including representative rural areas.
“The VHA is the largest integrated health care system in the United States with a national geographic reach including representative rural areas.55,56”
Quote in the paperSubstantial claim0 of 2 sources checked- cites [55] Administration UD of VA Veterans Health
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
- cites [56] Bureau UC
Couldn’t be matched to a paper in Crossref, so it can’t be checked.
May combine two claims.
Interpretationown dataGLP-1RA use among this population remained low overall despite increasing over time.
“Although the use of GLP-1RA agents increased across the time period of the cohort, usage overall remained low.”
- Also stated in: § Discussion/Conclusions: · plain
“Though this proportion increased over the years of the study population, the receipt of these effective medications remained low at ~15% overall in patients that entered the cohort in 2023.”
Quote in the paperSubstantial claim- Also stated in: § Discussion/Conclusions: · plain
May combine two claims.
Study design and conductown dataAge, female proportion, and comorbidities were largely balanced between rural and urban groups, with standardized mean differences below 0.2.
“Age, female proportion, and comorbidities were largely balanced between rural and urban areas with standardized mean differences <0.2.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S2 (checkable).
InterpretationreasoningMeasurable variables such as drive time, drive distance, and rurality alone do not encompass all aspects of access.
“Measurable variables such as drive time, drive distance, and rurality alone do not encompass all aspects of access.”
Quote in the paperNot a substantial claimClassified as probably not a substantial claim.
Study design and conductown dataAll analyses adjusted for clustering by VA Medical Center using a random intercept.
“In all analyses, patient’s VA Medical Center (defined as the medical center of the qualifying sleep study) was adjusted by a random intercept to account for clustering of practice patterns.”
Quote in the paperSubstantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductnone givenStaged analyses were performed to assess the impacts of confounding as outlined in the directed acyclic graph.
“We performed a series of staged analyses to assess the impacts of confounding as outlined in our DAG.”
Quote in the paperNot a substantial claimMay combine two claims.
Study design and conductown dataThe study sample has a disproportionate number of patients with male sex and is not representative of the U.S. population at large.
“First, while the VHA has national reach of services, there is a disproportionate sample of patients with male sex, which is not representative of the U.S. population at large.”
Quote in the paperNot a substantial claimMay combine two claims.
Study design and conductnone givenThe Veterans Health Administration has universal coverage of enrollees regardless of location, which limits confounding by insurance status and coverage.
“The VHA also has universal coverage of enrollees regardless of location, limiting confounding by insurance status and coverage.”
Quote in the paperSubstantial claim
The authors state this as an assumption.
Drive distance and drive time to primary and specialty care are mediators of the effect of rurality on GLP-1RA receipt.
“We performed a causal mediation analysis hypothesizing that patient’s drive distance and drive time to nearest VA primary care center are mediating variables. We also examined the mediating effects attributable to drive distance and drive time to nearest specialty care center.”
The paper relies on this without support.
There is no unmeasured confounding of the exposure-outcome, exposure-mediator, and mediator-outcome relationships in the mediation analysis.
“We then constructed a directed acyclic graph (DAG) to clearly define our a priori assumptions regarding covariate relationships with the exposure and outcome variables (Figure 1).29,30”
The paper relies on this without support.
Rural residence has a causal effect on GLP-1RA receipt that can be decomposed into direct and indirect effects.
“We performed a causal mediation analysis”
“From these regressions, we estimated the total effect, average direct effect, and average causal mediation (indirect) effect.35”
The paper relies on this without support.
Drive time and drive distance accurately measure geographic access to care.
“We also included geographic determinants of access to care, defined as drive time and drive distance to primary care and specialty care.”
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
Each contradiction between two passages listed here was confirmed by an independent check.
Overall sample size differs between Results and Discussion
MinorThe paper reports 68,680 patients in the Results section, but later says 68,862 patients were included in the sample. These two totals cannot both be correct for the same cohort.
“There were 68,680 patients identified within the VA CDW from January 1, 2018, to August 1, 2023 who met inclusion criteria.”
“Despite this, 12,069 patients of the 68,862 patients included in the sample were of female sex.”
Sample size differs in the limitations section
MinorThe limitations section gives a sample size of 68,862, whereas the results report 68,680 patients meeting the inclusion criteria.
“Despite this, 12,069 patients of the 68,862 patients included in the sample were of female sex.”
“There were 68,680 patients identified within the VA CDW from January 1, 2018, to August 1, 2023 who met inclusion criteria.”
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Once-Weekly Semaglutide in Adults with Overweight or Obesity
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mediation : R Package for Causal Mediation Analysis
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Cited by
Sorted by citations
Khan, S., & Stansbury, R. C. (2026) · Annals of the American Thoracic Society · doi:10.1093/annalsats/aaoag119
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“Most studies reported modestly lower prescribing in rural populations, particularly for obesity [58, 71, 76, 99].”
- Authors
- Leonhard, A. G., Josey, K., Castaneda, J. M., Chee, M., Duan, K. I., Nadeem, H., Plumley, R., Triplette, M., Smith, N. L., Au, D. H., Feemster, L. C., & Donovan, L. M.
- Affiliations
- University of Washington (US)
- Colorado School of Public Health (US)
- University of British Columbia (CA)
- VA Puget Sound Health Care System (US)
- United States Department of Veterans Affairs (US)
- Corresponding author
- Leonhard, Aristotle G
- ORCID
- Venue
- Annals of the American Thoracic Society
- Publisher
- Oxford University Press (OUP)
- Published
- 2026-03-03
- Volume
- 23
- Issue
- 7
- Pages
- 1087-1096
- ISSN
- 2325-6621 (ISSN-L)
- PMC
- PMC13307129
- OpenAlex
- W7133501054
- Cited by
- 3
- References
- 37
- Citations by year
- 2026: 3
- FWCI
- 12.62
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Annals of the American Thoracic Society (publishedVersion)
- PubMed (publishedVersion)
- Funders
- NIH/NHLBI (5T32 HL007287-45, 1F32HL179793-01)
- American Thoracic Society through the ATS Academic Sleep Pulmonary Integrated REsearch/Clinical
- Topics
- Health Sciences › Medicine › Pharmacology › Pharmacology and Obesity Treatment
- Health Sciences › Medicine › Physiology › Obstructive Sleep Apnea Research
- Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Treatment and Management
- Keywords
- GLP-1 receptor agonists, obstructive sleep apnea, overweight, obesity, urban-rural differences, health care access, weight loss, veterans
- MeSH terms
- Glucagon-Like Peptide-1 Receptor Agonists, Aged, Female, Humans, Male, Middle Aged, Rural Population, United States, Weight Loss, Body Mass Index, Sleep Apnea, Obstructive, Overweight
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Claims read under definition version 3 (extract-v3) on 2026-09-28.
Classified by jev-1.13-20260917 (gold-guideline-v0.2) on 2026-09-28.
Cited sources are checked by gpt-6-sol.
Statistics and arithmetic are recomputed, not judged.
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