Cited by 719Diabetes, Cardiovascular Risks, and LipoproteinsDiabetes Management and EducationDiabetes Management and Research

The Prevalence of Meeting A1C, Blood Pressure, and LDL Goals Among People With Diabetes, 1988–2010

Open access
Stark Casagrande, Sarah, Fradkin, Judith E., Saydah, Sharon H., Rust, Keith F., Cowie, Catherine C.·2013·Diabetes Care

Abstract

OBJECTIVE: To determine the prevalence of people with diabetes who meet hemoglobin A1c (A1C), blood pressure (BP), and LDL cholesterol (ABC) recommendations and their current statin use, factors associated with goal achievement, and changes in the proportion achieving goals between 1988 and 2010. RESEARCH DESIGN AND METHODS: Data were cross-sectional from the National Health and Nutrition Examination Surveys (NHANES) from 1988–1994, 1999–2002, 2003–2006, and 2007–2010. Participants were 4,926 adults aged ≥20 years who self-reported a previous diagnosis of diabetes and completed the household interview and physical examination (n = 1,558 for valid LDL levels). Main outcome measures were A1C, BP, and LDL cholesterol, in accordance with the American Diabetes Association recommendations, and current use of statins. RESULTS: In 2007–2010, 52.5% of people with diabetes achieved A1C <7.0% (<53 mmol/mol), 51.1% achieved BP <130/80 mmHg, 56.2% achieved LDL <100 mg/dL, and 18.8% achieved all three ABCs. These levels of control were significant improvements from 1988 to 1994 (all P < 0.05). Statin use significantly increased between 1988–1994 (4.2%) and 2007–2010 (51.4%, P < 0.01). Compared with non-Hispanic whites, Mexican Americans were less likely to meet A1C and LDL goals (P < 0.03), and non-Hispanic blacks were less likely to meet BP and LDL goals (P < 0.02). Compared with non-Hispanic blacks, Mexican Americans were less likely to meet A1C goals (P < 0.01). Younger individuals were less likely to meet A1C and LDL goals. CONCLUSIONS: Despite significant improvement during the past decade, achieving the ABC goals remains suboptimal among adults with diabetes, particularly in some minority groups. Substantial opportunity exists to further improve diabetes control and, thus, to reduce diabetes-related morbidity and mortality.

AI snapshot

Written from the paper’s full text.

TL;DR

In NHANES 1988–2010, achievement of A1C, blood pressure, and LDL goals among U.S. adults with self-reported diabetes improved substantially, but remained suboptimal. In 2007–2010, 52.5% met A1C <7.0%, 51.1% met BP <130/80 mmHg, 56.2% met LDL <100 mg/dL, and only 18.8% met all three ABC goals.

Key findings

  • In 2007–2010, 52.5% achieved A1C <7.0% (<53 mmol/mol), 51.1% achieved BP <130/80 mmHg, 56.2% achieved LDL <100 mg/dL, and 18.8% achieved all three ABC goals; these were significant improvements from 1988–1994 (all P < 0.05).
  • Statin use increased significantly from 4.2% in 1988–1994 to 51.4% in 2007–2010 (P < 0.01); in 2007–2010, 40.1% were taking a statin and achieved LDL <100 mg/dL.
  • Disparities persisted: Mexican Americans were less likely than non-Hispanic whites to meet A1C and LDL goals (P < 0.03), non-Hispanic blacks were less likely than non-Hispanic whites to meet BP and LDL goals (P < 0.02), and Mexican Americans were less likely than non-Hispanic blacks to meet A1C goals (P < 0.01); younger individuals were less likely to meet A1C and LDL goals.
  • Less stringent goals were more often met: A1C <8.0% (<64 mmol/mol) rose from 60.1% in 1988–1994 to 77.9% in 2007–2010; BP <140/90 mmHg rose from 62.0% to 72.0%; LDL <100 mg/dL rose from 9.9% to 56.2%; all three ABC goals rose from 1.7% to 18.8% (all P < 0.01 for comparisons with 2007–2010).

Methods

  • Cross-sectional National Health and Nutrition Examination Surveys (NHANES) from 1988–1994, 1999–2002, 2003–2006, and 2007–2010; participants were 4,926 adults aged ≥20 years who self-reported a previous diabetes diagnosis and completed the household interview and physical examination (n = 1,558 for valid LDL levels).
  • Main outcomes were A1C, BP, and LDL cholesterol according to ADA recommendations, plus current statin use; estimates were age and sex standardized to the 2007–2010 NHANES population with diabetes, used sample weights, accounted for cluster sampling with SUDAAN, and tested changes over time with two-sided t tests (P ≤ 0.05 vs. 2007–2010), with no adjustment for multiple comparisons.
  • A1C was standardized to the Diabetes Control and Complications Trial method; BP was measured with a standardized mercury sphygmomanometer after 5 minutes of rest, averaging up to four readings excluding the first; LDL was calculated for properly fasted participants as total cholesterol − HDL − triglycerides/5; eGFR was estimated with the Chronic Kidney Disease Epidemiology Collaboration equation.

Limitations

  • Stated: the small fasting sample made some subgroup LDL estimates unreliable; in NHANES 1988–1994, insulin users were not instructed to fast, so LDL estimates for those years include few insulin users; there was a discrepancy between self-reported lipid medication use and documented statin use; and an unexplained population-wide A1C increase in NHANES 2007–2010 may mean the percentage achieving A1C <7.0% is underestimated.
  • Stated: no information was available on medication compliance to further assess individualization of treatment, and the analysis only reports ABC control for individuals who self-reported diabetes.
  • Evident from the text: the cross-sectional design cannot establish causality; self-reported diabetes, CVD history, and medication use may be misclassified; and the lack of adjustment for multiple comparisons increases the possibility of false-positive subgroup findings.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.2337/dc12-2258

Cites

18 of 18 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Claims the paper makes

0 of 12 cited sources checked · 0 supported · 0 flagged

  • Findingown data

    Among US adults with diagnosed diabetes in 2007-2010, 72.0% achieved BP <140/90 mmHg.

    “The proportion with BP <140/90 mmHg was 72.0%”
    Quote in the paperSubstantial claim
    • Rests on an assumption: Self-reported previous diagnosis of diabetes accurately identifies adults with diabetes in NHANES.
  • Findingown data

    Among US adults aged ≥20 years with self-reported diagnosed diabetes in 2007-2010, 52.5% achieved an A1C <7.0% (<53 mmol/mol).

    “In 2007–2010, 52.5% of people with diabetes achieved A1C <7.0% (<53 mmol/mol)”
    • Also stated in: § A1C · plain
      “In 2007–2010, the overall prevalence of persons with diabetes achieving A1C <7.0% (<53 mmol/mol) was 52.5% (Fig. 1 and Table 1).”
    Quote in the paperSubstantial claim
    • Rests on an assumption: Self-reported previous diagnosis of diabetes accurately identifies adults with diabetes in NHANES.
  • Findingown data

    The prevalence of achieving A1C <7.0% among US adults with diabetes significantly increased from 1988-1994 to 2007-2010.

    “Over time, the prevalence of subjects with diabetes who achieved an A1C <7.0% (<53 mmol/mol) significantly increased (1988–1994 and 1999–2002 vs. 2007–2010 [P < 0.01 and P < 0.05, respectively]; Fig. 1 and Table 1).”
    Quote in the paperSubstantial claim
    • Rests on an assumption: Self-reported previous diagnosis of diabetes accurately identifies adults with diabetes in NHANES.
    • Rests on an assumption: The formula used to calculate LDL cholesterol from total cholesterol, HDL, and triglycerides is valid.
  • Findingown data

    Among US adults with diagnosed diabetes in 2007-2010, 77.9% achieved A1C <8.0% (<64 mmol/mol).

    “The proportion of participants with diabetes achieving A1C <8.0% (<64 mmol/mol) was 77.9% in 2007–2010”
    Quote in the paperSubstantial claim
    • Rests on an assumption: Self-reported previous diagnosis of diabetes accurately identifies adults with diabetes in NHANES.
  • Findingown data

    Among US adults aged ≥20 years with self-reported diagnosed diabetes in 2007-2010, 56.2% achieved LDL <100 mg/dL.

    “56.2% achieved LDL <100 mg/dL”
    • Also stated in: § LDL cholesterol · plain
      “In 2007–2010, the overall prevalence of achieving LDL <100 mg/dL was 56.2% (Fig. 1 and Table 3).”
    Quote in the paperSubstantial claim
    • Rests on an assumption: Self-reported previous diagnosis of diabetes accurately identifies adults with diabetes in NHANES.
    • Rests on an assumption: The fasting subsample used for LDL estimates is representative of the full diabetic population.
  • The quote only partly states this claim. 4
  • May combine two claims. 11
  • Classified as probably not a substantial claim. 11
  • The quote only partly states this claim.

    Findingown data

    Among US adults aged ≥20 years with self-reported diagnosed diabetes in 2007-2010, 51.1% achieved BP <130/80 mmHg.

    “51.1% achieved BP <130/80 mmHg”
    • Also stated in: § BP · plain
      “In 2007–2010, the prevalence of individuals with diabetes having BP <130/80 mmHg was 51.1% (Fig. 1 and Table 2).”
    Quote in the paperSubstantial claim
    • Rests on an assumption: Self-reported previous diagnosis of diabetes accurately identifies adults with diabetes in NHANES.
  • The quote only partly states this claim.

    Findingown data

    Among US adults aged ≥20 years with self-reported diagnosed diabetes in 2007-2010, 18.8% achieved all three ABC goals.

    “18.8% achieved all three ABCs”
    • Also stated in: § All three ABCs · plain
      “In 2007–2010, 18.8% of people achieved all three ABC goals (Fig. 1).”
    Quote in the paperSubstantial claim
    • Rests on an assumption: Self-reported previous diagnosis of diabetes accurately identifies adults with diabetes in NHANES.
    • Rests on an assumption: The fasting subsample used for LDL estimates is representative of the full diabetic population.
  • The quote only partly states this claim.

    Findingown data

    In 2007-2010, 40.1% of adults with diabetes were taking a statin and achieved LDL <100 mg/dL.

    “In 2007–2010, 40.1% of adults were taking a statin and achieved LDL <100 mg/dL.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: Self-reported previous diagnosis of diabetes accurately identifies adults with diabetes in NHANES.
    • Rests on an assumption: The fasting subsample used for LDL estimates is representative of the full diabetic population.
    • Rests on an assumption: Documented statin use from medication bottles accurately reflects actual statin use.
  • The quote only partly states this claim.

    Findingown data

    In 2007-2010, 81.2% of US adults with diabetes did not achieve all three ABC goals.

    “Almost half of Americans with diabetes did not meet each ABC goal, and 81.2% did not achieve all three goals.”
    Quote in the paperSubstantial claim
    • Rests on an assumption: Self-reported previous diagnosis of diabetes accurately identifies adults with diabetes in NHANES.
    • Rests on an assumption: The fasting subsample used for LDL estimates is representative of the full diabetic population.
  • May combine two claims.

    Premisecitation

    Prior NHANES data indicated that the prevalence of achieving an A1C <7.0% increased from 44% in 1988-1994 to 57% in 2003-2006, and achieving a BP <130/80 mmHg increased from 29% to 46% during the same interval.

    “National Health and Nutrition Examination Survey (NHANES) data indicate that the prevalence of achieving an A1C <7.0% (<53 mmol/mol) increased from 44% in 1988–1994 to 57% in 2003–2006; achieving a BP <130/80 mmHg increased from 29 to 46% during the same interval (5,6).”
    Quote in the paperSubstantial claim0 of 2 sources checked
    • cites [5] Cheung, 2009, Diabetes prevalence and therapeutic target achievement in the United States, 1999 to 2006, Am J Med source

      Not checked in the free run.

    • cites [6] Saydah, 2004, Poor control of risk factors for vascular disease among adults with previously diagnosed diabetes, JAMA source

      Not checked in the free run.

  • May combine two claims.

    Premisecitation

    Blood pressure and lipid control substantially reduce cardiovascular disease, the major cause of death for individuals with diabetes.

    “In addition, BP and lipid control substantially reduce cardiovascular disease (CVD), the major cause of death for individuals with diabetes (2).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [2] UK Prospective Diabetes Study (UKPDS) Group, 1998, Intensive blood-glucose control with sulphonylureas or insulin compared with conventional treatment and risk of complications in patients with type 2 diabetes (UKPDS 33), Lancet source

      Not checked in the free run.

  • May combine two claims.

    Interpretationown data

    Despite significant improvement during the past decade, achieving the ABC goals remains suboptimal among US adults with diabetes, particularly in some minority groups.

    “Despite significant improvement during the past decade, achieving the ABC goals remains suboptimal among adults with diabetes, particularly in some minority groups.”
    Quote in the paperSubstantial claim
    • Rests on an assumption: Self-reported previous diagnosis of diabetes accurately identifies adults with diabetes in NHANES.
    • Rests on an assumption: The fasting subsample used for LDL estimates is representative of the full diabetic population.
  • May combine two claims.

    Interpretationreasoning

    Younger adults with diabetes have more to gain from risk factor control because their life expectancy is longer and the potential for complications increases with the duration of diabetes.

    “Nevertheless, younger adults have more to gain from risk factor control because their life expectancy is longer and the potential for complications increases with the duration of diabetes.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S4 (based).

    Interpretationnone given

    Side effects of antihypertensives and statins may limit their use and therefore the attainment of treatment goals.

    “Side effects of antihypertensives (electrolyte disturbances, renal dysfunction, orthostatic hypotension) and statins (musculoskeletal) may also limit their use and, therefore, the attainment of the treatment goals.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S2 (checkable). May combine two claims.

    Interpretationreasoning

    Because goals are increasingly being tailored on the basis of individual factors, it is not expected or desirable that everyone with diabetes should attain these targets.

    “Finally, because goals are increasingly being tailored on the basis of individual factors, it is not expected or desirable that everyone with diabetes should attain these targets.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim. May combine two claims.

    Premisecitation

    The American Diabetes Association recommends that most adults with diabetes achieve an A1C <7.0%, BP <130/80 mmHg, and LDL cholesterol <100 mg/dL.

    “On the basis of this research, the American Diabetes Association (ADA) recommends that most adults with diabetes achieve an A1C <7.0% (<53 mmol/mol), BP <130/80 mmHg, and LDL cholesterol <100 mg/dL (ABCs) (3).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [3] American Diabetes Association, 2011, Standards of medical care in diabetes—2011, Diabetes Care source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S2 (checkable), S4 (based).

    Interpretationnone given

    Individuals with diabetes may lack self-management skills or the resources necessary for adherence to demanding self-care regimens, often involving polypharmacy and lifestyle change.

    “Second, individuals may lack self-management skills or the resources necessary for adherence to demanding self-care regimens, often involving polypharmacy, and lifestyle change.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim. May combine two claims.

    Study design and conductcitation

    All statistical analyses used sample weights adjusted for nonresponse and noncoverage and accounted for the cluster sampling design using SUDAAN.

    “All statistical analyses used sample weights (adjusted for nonresponse and noncoverage) and accounted for the cluster sampling design using SUDAAN (SUDAAN User’s Manual, Release 9.2, 2008; Research Triangle Institute).”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Premisecitation

    In the UKPDS, tight glycemic control alone in patients with newly diagnosed type 2 diabetes yielded a nonsignificant 16% decrease in CVD events and a significant 25% reduction in microvascular events.

    “In the UKPDS, tight glycemic control alone in patients with newly diagnosed type 2 diabetes yielded a nonsignificant 16% decrease in CVD events and a significant 25% reduction in microvascular events (2).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [2] UK Prospective Diabetes Study (UKPDS) Group, 1998, Intensive blood-glucose control with sulphonylureas or insulin compared with conventional treatment and risk of complications in patients with type 2 diabetes (UKPDS 33), Lancet source

      Not checked in the free run.

  • Classified as probably not a substantial claim. May combine two claims.

    Study design and conductcitation

    BP was measured using a standardized mercury sphygmomanometer after the participant rested quietly for 5 minutes, and up to four readings were averaged excluding the first measure.

    “BP was measured using a standardized mercury sphygmomanometer after the participant rested quietly for 5 minutes (9). Up to four readings were taken and were averaged, excluding the first measure (9).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [9] Centers for Disease Control and Prevention, National Center for Health Statistics, 2008

      Not checked in the free run.

  • Classified as probably not a substantial claim.

    Study design and conductnone given

    Multiple clinical outcomes were assessed using standardized procedures.

    “Multiple clinical outcomes were assessed using standardized procedures, which allowed us to better characterize diabetes control.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductnone given

    No adjustment was made for multiple comparisons.

    “No adjustment was made for multiple comparisons.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim.

    Study design and conductown data

    Results were age and sex standardized to the 2007-2010 NHANES population with diabetes.

    “To compare study characteristics and the proportion who met ABC goals, results were age and sex standardized to the 2007–2010 NHANES population with diabetes using the age categories of 20–39 (7.9%), 40–59 (38.3%), and ≥60 (53.8%) years.”
    Quote in the paperSubstantial claim
    • Rests on an assumption: The formula used to calculate LDL cholesterol from total cholesterol, HDL, and triglycerides is valid.
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductcitation

    Serum creatinine was calibrated across study years to reflect changes in assay methods.

    “serum creatinine was calibrated across study years to reflect changes in assay methods (12).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [12] National Center for Health Statistics. Laboratory manual for creatinine [Internet], 2008. Available from http://www.cdc.gov/nchs/nhanes/nhanes2005-2006/lab_methods_05_06.htm. Accessed 15 December 2012

      Not checked in the free run.

  • May combine two claims.

    Premisecitation

    Only 7% of people with diabetes in 1999-2002 and 12% in 2003-2006 met all three ABC goals.

    “Only 7% of people with diabetes in 1999–2002 and 12% in 2003–2006 met all three ABC goals (5).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [5] Cheung, 2009, Diabetes prevalence and therapeutic target achievement in the United States, 1999 to 2006, Am J Med source

      Not checked in the free run.

  • May combine two claims.

    Premisecitation

    In the Steno-2 Study, a randomized controlled trial among individuals with diabetes and microalbuminuria, hazard ratios were significantly reduced (0.41 for CVD events and 0.54 for overall mortality) in intensively treated participants compared with standard treatment.

    “In contrast, the Steno-2 Study, a randomized controlled trial among individuals with diabetes and microalbuminuria, tested a multifactorial intensive intervention targeting ABC control, aspirin therapy, diet, and physical activity. Hazard ratios were significantly reduced (0.41 for CVD events and 0.54 for overall mortality) in intensively treated participants compared with participants who”
    Quote in the paperSubstantial claim
  • Classified as probably not a substantial claim.

    Study design and conductnone given

    No information was available on medication compliance to further assess individualization of treatment.

    “No information was available on medication compliance to further assess individualization of treatment.”
    Quote in the paperSubstantial claim
22 of 22
  • The paper relies on this without support.

    Self-reported previous diagnosis of diabetes accurately identifies adults with diabetes in NHANES.

    “Participants were adults aged ≥20 years who answered “yes” when asked whether a physician or other health care professional ever told them that they had diabetes”
    “This analysis only reports ABC control for individuals who self-reported diabetes.”
  • The paper relies on this without support.

    The fasting subsample used for LDL estimates is representative of the full diabetic population.

    “Estimates for the prevalence of achieving all three goals were based on the fasting sample.”
    “One limitation is that the small number of individuals in the fasting sample made some subgroup LDL estimates unreliable.”
  • The paper relies on this without support.

    Documented statin use from medication bottles accurately reflects actual statin use.

    “Participants were asked to report prescription medications they had taken in the past 30 days and to bring medication bottles to the examination, where the information was documented.”
    “There was a discrepancy between self-reported lipid medication use and documentation of statin use; this may have resulted because lipid medication use was only reported among those who were told by a physician to take medication because participants were unaware of their statin use and it was not reported or because prescription medication bottles were not brought to the MEC.”
  • The paper relies on this without support.

    The age and sex standardization to the 2007–2010 NHANES diabetic population yields valid comparisons across survey periods.

    “To compare study characteristics and the proportion who met ABC goals, results were age and sex standardized to the 2007–2010 NHANES population with diabetes using the age categories of 20–39 (7.9%), 40–59 (38.3%), and ≥60 (53.8%) years.”
  • The paper relies on this without support.

    The formula used to calculate LDL cholesterol from total cholesterol, HDL, and triglycerides is valid.

    “LDL levels were calculated for people who had fasted properly (≥8 to <24 h) using the following formula: [LDL cholesterol = (total cholesterol) – (HDL cholesterol) – (triglycerides/5)].”
5 of 5

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Cites

Flagged first, then by citations

1 of the 19 references couldn’t be matched to a known paper.

Research works printed but not linked: 3

  1. Centers for Disease Control and Prevention, National Center for Health Statistics, 2008, National Health and Nutrition Examination Survey Examination Protocol
  2. Centers for Disease Control and Prevention, National Center for Health Statistics, 2008, National Health and Nutrition Examination Survey Laboratory Protocol: Cholesterol and Triglycerides
  3. Centers for Disease Control and Prevention, 2011, National diabetes fact sheet: national estimates and general information on diabetes and prediabetes in the United States, 2011

Cited by

Sorted by citations

Authors
Stark Casagrande, S., Fradkin, J. E., Saydah, S. H., Rust, K. F., & Cowie, C. C.
Affiliations
  • Social & Scientific Systems, Inc., Silver Spring, Maryland
  • National Institutes of Health (US)
  • Centers for Disease Control and Prevention (US)
  • Westat (United States) (US)
Venue
Diabetes Care
Published
2013-07-11
Volume
36
Issue
8
Pages
2271-2279
ISSN
  • 0149-5992 (ISSN-L)
  • 1935-5548
OpenAlex
W2007221722
Cited by
719
References
19
Citations by year
2026: 9 · 2025: 13 · 2024: 14 · 2023: 31 · 2022: 41 · 2021: 52 · 2020: 60 · 2019: 70 · 2018: 88 · 2017: 82 · 2016: 85 · 2015: 92 · 2014: 54 · 2013: 26
FWCI
67.38
Type
journal article
Language
en
Open access
Licence
cc-by-nc-nd
Locations
  • Diabetes Care (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
Funders
U.S. Public Health Service (GS-10F-0381L)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Education
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Management and Research
Keywords
diabetes mellitus, glycemic control, HbA1c, blood pressure control, LDL cholesterol, statin use, racial and ethnic disparities, Mexican Americans, non-Hispanic blacks, NHANES, diabetes complications prevention, cardiovascular risk reduction, young adults
MeSH terms
Adult, Black or African American, Blood Pressure, Cross-Sectional Studies, Diabetes Mellitus, Goals, Glycated Hemoglobin, Humans, Cholesterol, LDL, Middle Aged, Nutrition Surveys, United States, Prevalence, Mexican Americans, Hydroxymethylglutaryl-CoA Reductase Inhibitors, White People

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