Effect of Higher-Dose Ivermectin for 6 Days vs Placebo on Time to Sustained Recovery in Outpatients With COVID-19: A Randomized Clinical Trial
Open accessAbstract
Importance: It is unknown whether ivermectin, with a maximum targeted dose of 600 μg/kg, shortens symptom duration or prevents hospitalization among outpatients with mild to moderate COVID-19. Objective: To evaluate the effectiveness of ivermectin at a maximum targeted dose of 600 μg/kg daily for 6 days, compared with placebo, for the treatment of early mild to moderate COVID-19. Design, Setting, and Participants: The ongoing Accelerating COVID-19 Therapeutic Interventions and Vaccines 6 (ACTIV-6) platform randomized clinical trial was designed to evaluate repurposed therapies among outpatients with mild to moderate COVID-19. A total of 1432 participants older than 30 years with confirmed COVID-19 experiencing at least 2 symptoms of acute infection for less than or equal to 7 days were enrolled at 93 sites in the US from February 16, 2022, through July 22, 2022, with follow-up data through November 10, 2022. Interventions: Participants were randomly assigned to receive ivermectin, with a maximum targeted dose of 600 μg/kg (n = 708) daily, or placebo (n = 724) for 6 days. Main Outcomes and Measures: The primary outcome was time to sustained recovery, defined as at least 3 consecutive days without symptoms. The 7 secondary outcomes included a composite of hospitalization, death, or urgent/emergent care utilization by day 28. Results: Among 1432 randomized participants who received study medication or placebo, the median (IQR) age was 48 (38-58) years, 854 (59.6%) were women, and 1188 (83.1%) reported receiving at least 2 SARS-CoV-2 vaccine doses. The median (IQR) time to sustained recovery was 11 (11-12) days in the ivermectin group and 12 (11-12) days in the placebo group. The hazard ratio for improvement in time to recovery was 1.02 (95% credible interval, 0.92-1.12; P value for efficacy = .65). Among those receiving ivermectin, 39 (5.5%) were hospitalized, died, or had urgent or emergency care visits compared with 42 (5.8%) receiving placebo (hazard ratio, 0.97 [95% credible interval, 0.60-1.45]; P = .55). In the ivermectin group, 1 participant died and 6 were hospitalized (1.0%); 2 participants (0.3%) were hospitalized in the placebo group and there were no deaths. Adverse events were uncommon in both groups. Conclusions and Relevance: Among outpatients with mild to moderate COVID-19, treatment with ivermectin, with a maximum targeted dose of 600 μg/kg daily for 6 days, compared with placebo did not improve time to sustained recovery. These findings do not support the use of ivermectin in patients with mild to moderate COVID-19. Trial Registration: ClinicalTrials.gov Identifier: NCT04885530
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- Findingown data
By day 7, 88% (532/602) in ivermectin and 91% (549/604) in placebo were not hospitalized and did not report limitation of activities.
“For example, by day 7, a total of 532 of 602 participants (88%) in the ivermectin group and 549 of 604 (91%) in the placebo group were not hospitalized and did not report limitation of activities (eFigure 6 in Supplement 3).”
Quote in the paperNot a substantial claim - Findingown data
Time from symptom onset to receiving the study drug showed no significant overall effect (P=.15 for heterogeneity).
“The overall effect of timing from symptom on- set to receipt of the study drug was not significant (P = .15 for heterogeneity).”
Quote in the paperNot a substantial claim - Findingown data
Mean time feeling unwell was estimated to be 3 hours 20 minutes shorter with ivermectin than placebo (95% CrI, 12 hours better to 6 hours worse).
“The difference in the amount of time spent feeling unwell with COVID-19 was estimated as 3 hours and 20 minutes faster with ivermectin (95% CrI, 12 hours better to 6 hours worse) than placebo (Figure 2C).”
Quote in the paperNot a substantial claim - Findingown data
The median time to sustained recovery was 11 days (IQR 11-12) in both the ivermectin and placebo groups.
“The median (IQR) time to sustained recovery was 11 (11-12) days in the ivermectin group and 11 (11-12) days in the placebo group.”
- Also stated in: § Primary Outcome · plain
“The median (IQR) time to recovery was 11 (11-12) days in the ivermectin group and 11 (11-12) days in the placebo group.”
Quote in the paperSubstantial claim - Also stated in: § Primary Outcome · plain
- Findingown data
In outpatients with mild to moderate COVID-19, ivermectin (targeted max 600 μg/kg per day for six days) did not improve time to sustained recovery compared with placebo.
“Among outpatients with mild to moderate COVID-19, treatment with ivermectin, with a maximum targeted dose of 600 μg/kg daily for 6 days, compared with placebo did not improve time to sustained recovery.”
- Also stated in: § Discussion · hedged
“Among a largely vaccinated outpatient population with mild to moderate COVID-19, treatment with ivermectin, with a targeted maximum dose of 600 μg/kg daily for 6 days, compared with placebo was not shown to improve time to recovery in more than 1200 participants in the US during a period of Omicron variant/subvariant circulation.”
Quote in the paperSubstantial claim - Also stated in: § Discussion · hedged
- Findingown data
The composite secondary outcome of urgent or emergency care visits, hospitalizations, or death by day 28 did not differ between ivermectin and placebo (5.6% vs 6.0%; HR 1.0 [95% CrI 0.6-1.5]; P=.53).
“The composite secondar y outcome of urgent c are or ED visits, hospitalizations, or death was not shown to differ with ivermectin compared with placebo (5.6% [34/602] vs 6.0% [36/ 604]; HR, 1.0 [95% CrI, 0.6-1.5]; P = .53)”
- Also stated in: § Abstract · plain
“Among those receiving ivermectin, 34 (5.7%) were hospitalized, died, or had urgent or emergency care visits compared with 36 (6.0%) receiving placebo (hazard ratio, 1.0 [95% credible interval, 0.6-1.5];P = .53).”
Quote in the paperNot a substantial claim - Also stated in: § Abstract · plain
- Findingown data
The hazard ratio for improvement in time to recovery with ivermectin vs placebo was 1.02 (95% credible interval 0.92-1.13; P=.68).
“The hazard ratio (posterior probability of benefit) for improvement in time to recovery was 1.02 (95% credible interval, 0.92-1.13;P = .68).”
Quote in the paperSubstantial claim - Findingown data
Adverse events were similar between groups: 9.2% (52/566) in ivermectin and 7.1% (41/576) in placebo.
“Among participants who reported taking the study drug at least once, adverse events were similar in both groups (52/566 [9.2%] in the ivermectin group and 41/576 [7.1%] in the placebo group with adverse events) (eTable 2 in Supplement 3).”
Quote in the paperNot a substantial claim - Findingown data
The chance that ivermectin shortened symptom duration by one day was under 0.1%.
“The probability that ivermectin reduced symptom duration by 24 hours was less than 0.1%.”
Quote in the paperSubstantial claim - Findingown data
Scores on the COVID Clinical Progression Scale at days 7, 14, and 28 failed to reach prespecified thresholds for benefit.
“The COVID Clinical Progression Scale scores at days 7, 14, and 28 did not meet prespecified thresholds for beneficial treatment effect (Supplement 3).”
Quote in the paperNot a substantial claim - Findingown data
For time to recovery, the adjusted hazard ratio with the skeptical prior was 1.02 (95% credible interval, 0.92-1.13), with a P value of .68.
“Skeptical prior (primary analysis) | | | 1.02 (0.92 to 1.13) | .68”
Quote in the paperSubstantial claim - Findingcitation
Visual disturbances that were known and self-resolving were more prevalent in the ivermectin group.
“with a higher prevalence of the known self-resolving visual disturbances in the interven-tion group”
Quote in the paperNot a substantial claim - Findingown data
Sensitivity analyses did not show a conclusive treatment benefit under different priors, missing-data imputation, or restriction to early treatment or symptom severity subgroups.
“The data do not provide evidence of a conclusive treatment benefit when using a bayesian noninformative prior, no prior, with various approaches to imputing missing symptom data, or when restricting the analysis to participants who received the drug within 2 or 3 days of symptom onset and across severity of symptoms reported on day 1 (Table 2, Figure 3, and eFigures 3 and 4 in Supple- ment 3).”
Quote in the paperSubstantial claim - Findingown data
Mortality at day 28 was 1 (0.17%) in the ivermectin group and 0 in the placebo group.
“Mortality at day 28 | 1 (0.17) | 0 | | |”
Quote in the paperNot a substantial claim - Findingown data
Acute care visits, hospitalizations, or death occurred at similar rates with ivermectin (5.7%) and placebo (6.0%).
“The incidence of acute care visits, hospitalizations, or death was similar with ivermectin (5.7%) and placebo (6.0%)”
Quote in the paperNot a substantial claim - Findingown data
In this study, the median ivermectin dose for the study population was about 500 μg/kg.
“thus, the median dose across the study population of approximately 500 μg/kg”
Quote in the paperSubstantial claim - Findingown data
This trial found no evidence that treatment effect differed by shorter time to receiving the study drug.
“In this trial, no evidence of a differential treatment effect was observed based on shorter time to study drug receipt.”
Quote in the paperNot a substantial claim - Findingown data
In outpatients with mild or moderate COVID-19, ivermectin given at a targeted maximum of 600 μg/kg per day for six days did not improve time to sustained recovery relative to placebo.
“Among outpatients with mild or moderate COVID-19, treatment with ivermectin, with a targeted maximum dose of 600 μg/kg daily for 6 days, was not shown to improve time to sustained recovery compared with placebo.”
Quote in the paperSubstantial claim- Rests on an assumption: Time to sustained recovery is a clinically meaningful end point for outpatients with mild or moderate COVID-19.
- Premisecitation
Three large outpatient randomized trials in symptomatic mild-to-moderate COVID-19 found no clinical benefit from ivermectin at 400 μg/kg daily for three days.
“Three large randomized outpatient trials of people with symptomatic mild or moderate COVID-19 failed to identify a clinical benefit of ivermectin when dosed at 400 μg/kg daily for 3 days.[16][17][18]”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [16][17][18]
Not checked in the free run.
- Study design and conductown data
With about 1200 participants, the design had 80% power to detect a primary-endpoint hazard ratio of 1.2.
“The study design was estimated to have 80% power to detect an HR of 1.2 in the primary end point with approximately 1200 participants.”
Quote in the paperNot a substantial claim - Interpretationown data
The findings do not support using ivermectin in outpatients with mild to moderate COVID-19.
“These findings do not support the use of ivermectin in patients with mild to moderate COVID-19.”
- Also stated in: § Discussion · plain
“These findings do not support the use of ivermectin in outpatients with COVID-19.”
Quote in the paperSubstantial claim - Also stated in: § Discussion · plain
- Interpretationown data
The median dose in this study was substantially higher than the median dose in studies whose maximum targeted ivermectin dose was 400 μg/kg.
“is meaningfully higher than that achieved in studies that targeted a maximum dose of 400 μg/kg.”
Quote in the paperSubstantial claim - Interpretationreasoning
In this cohort, which was largely vaccinated, hospitalizations and COVID-19-related clinical events occurred less often.
“Hospitalizations and COVID-19-related clinical events were less common in this largely vaccinated cohort.”
Quote in the paperNot a substantial claim - Premisecitation
Modeling plus a proof-of-concept clinical study indicated that daily doses as high as 600 μg/kg might reach systemic levels adequate for in vitro antiviral effects.
“A combination of modeling studies and a proof-of-concept clinical study have suggested doses up to 600 μg/kg daily may achieve system levels sufficient for in vitro antiviral activity.18,19”
Quote in the paperSubstantial claim0 of 2 sources checked- cites [18]
Not checked in the free run.
- cites [19]
Not checked in the free run.
- Premisecitation
Several large double-blind randomized trials have not shown a clinically meaningful benefit for ivermectin when the targeted dose was 400 μg/kg per day for three days.
“Multiple large double-blind randomized clinical trials have failed to identify a clinically meaningful benefit of ivermectin when used at a targeted dose of 400 μg/kg daily for 3 days.6,17”
Quote in the paperSubstantial claim0 of 2 sources checked- cites [6] source
Not checked in the free run.
- cites [17]
Not checked in the free run.
- Premisecitation
Two earlier US randomized trials of ivermectin 400 μg/kg also found this result.
“which was a result also observed in the 2 previous randomized trials of ivermectin 400 μg/kg in the US.6,16”
Quote in the paperNot a substantial claim0 of 2 sources checked- cites [6] source
Not checked in the free run.
- cites [16]
Not checked in the free run.
- Premisecitation
Modeling work and a proof-of-concept clinical study have suggested that 600 μg/kg per day or less might produce drug levels high enough for in vitro antiviral activity.
“Modeling studies and a proof-of-concept clinical study have suggested that doses up to 600 μg/kg daily may achieve levels sufficient for in vitro antiviral activity 18,19”
Quote in the paperSubstantial claim0 of 2 sources checked- cites [18]
Not checked in the free run.
- cites [19]
Not checked in the free run.
- Interpretationown data
The results do not support ivermectin use in outpatients with COVID-19.
“These findings do not support the use of ivermectin in outpatients with COVID-19.”
Quote in the paperSubstantial claim- Rests on an assumption: Time to sustained recovery is a clinically meaningful end point for outpatients with mild or moderate COVID-19.
- May combine two claims. 21
- Classified as probably not a substantial claim. 12
May combine two claims.
Findingown dataNo evidence of differential treatment effect of ivermectin vs placebo was found for symptom severity, sex, age, BMI, calendar time, or vaccination status.
“Similarly, no evidence existed for a different treatment effect of ivermectin compared with placebo for se- verity of symptoms, sex, age, BMI, calendar time, or vaccina- tion status (eFigure 8 in Supplement 3).”
Quote in the paperNot a substantial claimMay combine two claims.
Findingown dataFew participants were hospitalized or died: five events in the ivermectin arm (one death judged unrelated to COVID-19 or treatment) and two events in the placebo arm (no deaths).
“Hospitalizations and deaths were uncommon, with 5 events (including 1 death not attributable to COVID-19 or treatment) in the ivermectin group and 2 events (no deaths) in the placebo group (eFigure 5A in Supplement 3).”
Quote in the paperNot a substantial claimMay combine two claims.
Findingown dataThe posterior probability of benefit for the primary outcome of time to recovery was .68, below the prespecified threshold of .95.
“The posterior probability for benefit was .68 for the primary outcome of time to recovery, with an HR of 1.02 (95% credible 2 and Figure 2A).This posterior probability was below the prespecified threshold of .95(Supplement 2).”
Quote in the paperSubstantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
Findingown dataThe remote design meant that 60% of participants took the study drug within five days after symptoms began.
“Also, due to the remote nature of the trial, 60% of participants received the study drug within 5 days of symptom onset.”
Quote in the paperNot a substantial claimMay combine two claims.
Findingown dataMean time unwell was 11.21 days with ivermectin and 11.35 days with placebo, a difference of -0.14 days (95% credible interval, -0.51 to 0.24), with P=.77.
“Time unwell, mean (95% CrI), d e | 11.21 (11.01 to 11.41) 11.35 (11.16 to 11.54) Difference, -0.14 (-0.51 to 0.24) .77”
Quote in the paperSubstantial claimMay combine two claims.
Findingown dataThe 600 μg/kg ivermectin dose was safe and generally well tolerated.
“The 600-μg/kg dose was safe and generally well tolerated”
Quote in the paperSubstantial claimMay combine two claims.
Findingown dataHospitalization, urgent care, emergency department visit, or death through day 28 occurred in 34 (5.65%) ivermectin participants and 36 (5.96%) placebo participants, with an adjusted hazard ratio of 1.0 (95% credible interval, 0.6-1.5) and P=.53.
“Hospitalization, urgent care, ED visit, or death through day 28 34 (5.65) | 36 (5.96) | 1.0 (0.6 to 1.5) | .53”
Quote in the paperSubstantial claimMay combine two claims.
Findingown dataHospitalization or death through day 28 occurred in 5 (0.83%) ivermectin participants and 2 (0.33%) placebo participants, with an adjusted hazard ratio of 2.51 (95% credible interval, 0.49-12.96).
“Hospitalization or death through day 28 | 5 (0.83) | 2 (0.33) | 2.51 (0.49 to 12.96) c”
Quote in the paperNot a substantial claimMay combine two claims.
Findingown dataMean days of benefit was 3.42 with ivermectin and 3.26 with placebo, a difference of 0.16 days (95% credible interval, -0.28 to 0.61), with P=.77.
“Days of benefit, mean (95% CrI), d f | 3.42 (3.18 to 3.64) | 3.26 (3.03 to 3.48) | Difference, 0.16 (-0.28 to 0.61) | .77”
Quote in the paperSubstantial claimMay combine two claims.
Findingown dataThe ivermectin 600 μg/kg group enrolled quickly amid Omicron variant and subvariant surges and was mostly vaccinated.
“The ivermectin 600 μg/kg group of the platform trial enrolled rapidly due to ongoing Omicron variant/ subvariant surges and largely included vaccinated people”
Quote in the paperSubstantial claimMay combine two claims.
FindingcitationIn this study, 84% of participants had completed vaccination, compared with 47% in the earlier ivermectin 400 μg/kg group.
“the completed vaccination rate, which was 84% for this study and 47% for the prior ivermectin 400 μg/kg group.16”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [16]
Not checked in the free run.
Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
Study design and conductreasoningEach site's institutional review board approved the protocol, and an independent data monitoring committee monitored safety and trial conduct.
“The trial protocol was approved by each site's institutional review board.”
- Also stated in: § Trial Design and Oversight · plain
“An independent data monitoring committee oversaw participant safety and trial conduct.”
Quote in the paperNot a substantial claim- Also stated in: § Trial Design and Oversight · plain
Classified as probably not a substantial claim. May combine two claims.
Study design and conductreasoningThe trial was randomized, double-blind, and placebo-controlled.
“Accelerating COVID-19 Therapeutic Interventions and Vaccines 6 (ACTIV-6) is an ongoing, fully remote (decentralized), double-blind, randomized placebo-controlled platform trial investigating repurposed drugs for the treatment of mild to moderate COVID-19 in the outpatient setting.”
- Also stated in: § Abstract · plain
“DESIGN, SETTING, AND PARTICIPANTSThe ongoing Accelerating COVID-19 Therapeutic Interventions and Vaccines 6 (ACTIV-6) platform randomized clinical trial was designed to evaluate repurposed therapies among outpatients with mild to moderate COVID-19.”
Quote in the paperSubstantial claim- Also stated in: § Abstract · plain
Probably not a substantial claim: may not pass S3 (load-bearing).
PremisecitationAn in vitro study suggesting possible antiviral activity initially prompted interest in ivermectin as a repurposed COVID-19 drug.
“Ivermectin, an antiparasitic drug used worldwide for onchocerciasis and strongyloidiasis, emerged in 2020 as a potential repurposed drug for COVID-19 initially informed by an in vitro study suggesting possible antiviral activity.11”
Quote in the paperNot a substantial claim0 of 1 sources checked- cites [11] source
Not checked in the free run.
Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
Study design and conductown dataRandomization used a random number generator and a two-step procedure.
“Participants were randomized using a random number generator in a 2-step process (Figure 1).”
Quote in the paperNot a substantial claimClassified as probably not a substantial claim.
Study design and conductown dataPrimary analyses used a modified intention-to-treat set: everyone who received study drug, analyzed according to assignment.
“For this trial, the modified intention-to-treat analysis set for the primary analyses included all participants who received the study drug, and participants were analyzed as assigned.”
Quote in the paperSubstantial claimMay combine two claims.
PremisecitationA phase 2 trial that gave ivermectin 600 μg/kg per day for seven days and used an oropharyngeal SARS-CoV-2 PCR virologic end point found no measurable antiviral activity and was halted for futility.
“however, a phase 2 trial testing ivermectin, 600 μg/kg daily for 7 days, and assessing a virologic end point of oropharyngeal SARS-CoV-2 polymerase chain reaction test result did not show measurable antiviral activity and was stopped for futility.21”
Quote in the paperSubstantial claim0 of 1 sources checked- cites [21] source
Not checked in the free run.
Probably not a substantial claim: may not pass S3 (load-bearing).
PremisecitationMost outpatient antiviral trials for COVID-19 have enrolled only participants who were within five days of symptom onset.
“Most outpatient COVID-19 antiviral trials have limited enrollment to participants within 5 days of symptom onset.1,2”
Quote in the paperNot a substantial claim0 of 2 sources checkedProbably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
Study design and conductreasoningSecondary end points were exploratory and not used for formal decision-making because of multiple comparisons.
“Secondary end points were not used for formal decisionmaking, and no decision threshold was selected.Due to an increased potential for type I error due to multiple comparisons, secondary end points should be interpreted as exploratory.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
Premisenone givenWeight-based dosing introduces additional variability in the range of doses administered.
“With weight-based dosing, there is additional variability in the range for dosing”
Quote in the paperNot a substantial claimMay combine two claims.
PremisereasoningNo optimal dose of ivermectin for COVID-19 had been established, because early-phase and animal-model studies needed to determine optimal dosing for a therapeutic drug were lacking.
“Due to the lack of early-phase studies or animalmodel studies to determine optimal dosing for a therapeutic drug, the appropriate dosing of ivermectin for COVID-19 was never determined.”
Quote in the paperSubstantial claimMay combine two claims.
Study design and conductown dataThe trial was nationwide, double-blind, randomized, and placebo-controlled; it had 93 enrolling sites and a call center that recruited from all 50 US states.
“This was a double-blind, randomized, placebo-controlled nationwide trial with 93 enrolling sites and a call center that recruited participants from all 50 US states.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing).
Study design and conductnone givenThe adjusted model for the primary end point did not include underlying comorbidities.
“Lastly, the primary end point-adjusted model did not include underlying comorbidities.”
Quote in the paperNot a substantial claimMay combine two claims.
InterpretationreasoningThis mostly vaccinated population is highly relevant and helps address a limitation of many other studies that excluded vaccinated individuals.
“thus representing a highly relevant study population that also addresses a weakness of many other studies that excluded vaccinated people.”
Quote in the paperNot a substantial claimProbably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
Study design and conductnone givenAge and BMI were expected to modify treatment effect; both were included as covariates and assessed for heterogeneity of treatment effect.
“Treatment effect was putatively expected to differ based on age and BMI, and these were included as covariates and evaluated for heterogeneity of treatment effect.”
Quote in the paperNot a substantial claimMay combine two claims.
Study design and conductown dataHospitalization was infrequent, so this study cannot determine the intervention's effect on that outcome.
“Due to infrequent hospitalization, this study cannot assess the effect of the intervention on this clinical outcome.”
Quote in the paperSubstantial claimProbably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.
Study design and conductnone givenThe study permitted standard-of-care therapies, but few participants used them.
“Furthermore, standard-of-care therapies were allowable in this study, although utilization was low.”
Quote in the paperNot a substantial claim
The paper relies on this without support.
Achieving drug levels sufficient for in vitro antiviral activity against SARS-CoV-2 will translate into clinical benefit in patients with COVID-19.
“Modeling studies and a proof-of-concept clinical study have suggested that doses up to 600 μg/kg daily may achieve levels sufficient for in vitro antiviral activity 18,19”
The paper relies on this without support.
Time to sustained recovery is a clinically meaningful end point for outpatients with mild or moderate COVID-19.
“Among outpatients with mild or moderate COVID-19, treatment with ivermectin, with a targeted maximum dose of 600 μg/kg daily for 6 days, was not shown to improve time to sustained recovery compared with placebo.”
The paper relies on this without support.
The earlier null results for ivermectin at 400 μg/kg for 3 days were due to insufficient dose or duration rather than lack of efficacy.
“This large clinical trial addresses a potential gap in knowledge by testing (1) a higher daily dose (targeted maximum dose of 600 μg/kg) and ( 2) a longer (6-day) duration of ivermectin.”
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
During the COVID-19 pandemic, systematic reviews for ivermectin suggested an impressive benefit of the drug for reducing mortality on the basis of potentially problematic trials, while subsequent high-quality evidence appears to show modest or no benefit.
“During the COVID-19 pandemic, systematic reviews for ivermectin suggested an impressive benefit of the drug for reducing mortality on the basis of potentially problematic trials (25), while subsequent high-quality evidence appears to show modest or no benefit (26, 27).”
From INSPECT-SR: a tool for assessing trustworthiness of randomised controlled trials (2025) · cites this paper as [27]
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.
Reported recovery IQR conflicts with patients still at risk on day 14
MinorAn IQR of 11 to 12 days implies that at least 75% of participants had recovered by day 12. Yet the figure lists 232 of 602 ivermectin participants and 244 of 604 placebo participants still at risk on day 14-more than 25% in each group.
“Median (IQR) time to recovery was 11 (11-12) days in the ivermectin group and 11 (11-12) days in the placebo group.”
“0 602 604 7 487 508 14 232 244 21 131 142 28 92 95 No. of patients at risk”
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- Authors
- Naggie, S., Boulware, D. R., Lindsell, C. J., Stewart, T. G., Slandzicki, A. J., Lim, S. C., Cohen, J., Kavtaradze, D., Amon, A. P., Gabriel, A., Gentile, N., Felker, G. M., Jayaweera, D., McCarthy, M. W., Sulkowski, M., Rothman, R. L., Wilson, S., DeLong, A., Remaly, A., Wilder, R., Collins, S., Dunsmore, S. E., Adam, S. J., Thicklin, F., Hanna, G. J., Ginde, A. A., Castro, M., McTigue, K., Shenkman, E., Hernandez, A. F., Accelerating Covid-19 Therapeutic Interventions and Vaccines (ACTIV)-6 Study Group and Investigators, Vincent, W. (., Vincent, R., Bianchi, R., Premas, J., Cordero-Loperena, D., Rivera, E., Gupta, M., Karawan, G., Ziomek, C., Arena, J., DeAlmeida, S., Ramin, S., Nataraj, J., Paasche-Orlow, M., Henault, L., Waite, K., Miller, D., Brounce, G., George-Adebayo, C., Adebayo, A., Wallan, J., Vogel, C., Munoz, S., Watson, C., Singleton, D., Rivon, M., Sevier, A., Del Pilar, A., Spangler, A., Rao, S., Cantu, L., Krishna, A., Evans, K., Falkner, T., Kerr, B., Spees, R., Marta, M., Harrington, A., Dolor, R., Frazier, M., Vergara, L., Wilson, J., Burruss, V., Hurst, T., Ofotokun, I., Rebolledo, P., Prabhu, R., Klicka, K., Lightfeather, A., James, V., Rogers, M., Parihar, P., Torress, D., Oragwu, C., Oguego, N., Pillai, R., Juma, M., Ghaly, E., Al-Haddadin, D., Ramirez, C., Hassanien, G., Ismail, S., Meltzer, A., Moran, S., Brehaut, S., Roche, A., Mehta, M., Koppinger, N., Baez, J., Pagan, I., Abdelsayed, D., Aziz, M., Robinson, P., Nguyen, J., Pardue, V., Hammons, L., Ruiz-Unger, J., Gonzalez, S., Reyes, L., Cienki, J., Jimenez, G., Wong, M., Yuan, Y., Li, J., Szeto, J., Stelmash, L., Haight, D., Lamb, D., Harper, A., Pyram-Bernard, N., Quintero, A., Adhami, E., Maria, J., Paudel, D., Raymond, O., Summers, J., Turner, T., Lenert, L., Gallegos, S., Szwast, E. A., Abdulghani, A., Vasoya, P., Miller, C., Wiley, H., Shah, N., Klein, T., Castex, J., Feliciano, P., Olivo, J., Ghaly, M., Javed, Z., Nawrocki, A., Vecchiarelli, A., Vigil, N., Cherukuri, V., Burden, E., Linn, D., Fisher, L., Patel, V., Patel, P., Patel, Y., Ellison, L., Harrison, J., Shah, B., Shah, S., Singh, U., Donahue, J., Jazayeri, Y., Gupta, A., Chandrasekar, N., Moritz, B., Fortt, T., Fortt, A., Jones-Ince, I., McKee, A., Schattinger, C., Wilson, J., Farlow, B., Finlaw, L., Richwine, R., Williams, T., Paizer, P., Carson, L., Michelson, E., Austin, D., Khetpal, S., Cantrell, T., Franklin, D., Marshall, K., Mahadevan, A., Rosequist, M., Gnoni, M., Daffner, C., VandeWeerd, C., Roberts, M., D'Andrea, M., Swink, W., Powers-Fletcher, M., Mukunzi, S., Hensley, J., Manning, B., Isache, C., Bowman, J., Callaghan-Brown, A., Scott, T., Schwasinger-Schmidt, T., Cornejo, A., Almanzar, M., Ginsburg, L., Hajaz, A., Bramante, C., Robinson, M., Seithel, M., Sekikawa, A., Klawson, E., Ostrosky, L., Umana, V., Patterson, T., Tragus, R., Jackson, P., Hallowell, C., Haughey, H., Vaidya-Tank, B., Gould, C., Goyal, P., Gatewood, C., Williamson, J., Seagle, H., Salsgiver, E., Armas, E., Cheng, J., Huerta, P., Garcia-Diaz, J., Aamodt, D., Ayers, J., Collins, J., Graves, J., Grindstaff, J., Lai, J., Lopez, I., Marlin, J., Merkel, A., Nwosu, S., Obregon, S., Orozco, D., Perez-Torres, Y., Prato, N., Ratcliff, C., Rhode, M., Shirey-Rice, J., Vermillion, K., Tan, H.-N., Tregoning, S., Vance, M., Vongsamphanh, A., Weir, M., Zaleski, N., Bozzette, S., & Passamani, G.
- Affiliations
- Duke University (US)
- University of Minnesota (US)
- Vanderbilt University Medical Center (US)
- University of Virginia (US)
- Clinical Trials Center of Middle Tennessee, Franklin
- University Medical Center New Orleans (US)
- Jadestone Clinical Research, LLC, Silver Spring, Maryland
- David Kavtaradze, Inc, Cordele, Georgia
- Lakeland Regional Medical Center (US)
- Focus Clinical Research Solutions, Charlotte, North Carolina
- Temple University (US)
- University of Miami (US)
- Weill Cornell Medicine (US)
- Johns Hopkins University (US)
- VA Tennessee Valley Healthcare System (US)
- National Institutes of Health (US)
- Foundation for the National Institutes of Health (US)
- Stakeholder Advisory Committee, Pittsburgh, Pennsylvania
- Biomedical Advanced Research and Development Authority (US)
- University of Colorado Anschutz (US)
- University of Missouri–Kansas City (US)
- University of Pittsburgh Medical Center (US)
- University of Florida (US)
- for the Accelerating Covid-19 Therapeutic Interventions and Vaccines (ACTIV)-6 Study Group and Investigators
- Corresponding author
- Naggie, Susanna
- ORCID
- Naggie, Susanna
- Boulware, David R.
- Lindsell, Christopher J.
- Stewart, Thomas G.
- Lim, Stephen C.
- Cohen, Jonathan
- Gentile, Nina
- Felker, G. Michael
- Jayaweera, Dushyantha
- McCarthy, Matthew W.
- Sulkowski, Mark
- Rothman, Russell L.
- Collins, Sean
- Adam, Stacey J.
- Hanna, George J.
- Ginde, Adit A.
- Castro, Mario
- McTigue, Kathleen
- Shenkman, Elizabeth
- Hernandez, Adrian F.
- Miller, David
- Dolor, Rowena
- Frazier, Madison
- Ofotokun, Igho
- Nguyen, Julie
- Yuan, Ying
- Li, Jenny
- Lenert, Leslie
- Singh, Upinder
- Gupta, Anita
- Michelson, Edward
- Isache, Carmen
- Schwasinger-Schmidt, Tiffany
- Bramante, Carolyn
- Robinson, Matthew
- Sekikawa, Akira
- Patterson, Thomas
- Tragus, Robin
- Jackson, Patrick
- Goyal, Parul
- Williamson, John
- Seagle, Hannah
- Salsgiver, Elizabeth
- Venue
- JAMA
- Publisher
- American Medical Association (AMA)
- Published
- 2023-03-21
- Volume
- 329
- Issue
- 11
- Pages
- 888
- ISSN
- 0002-9955 (ISSN-L)
- 0098-7484
- PMC
- PMC9941969
- OpenAlex
- W4321369786
- Cited by
- 79
- References
- 16
- Citations by year
- 2026: 11 · 2025: 20 · 2024: 19 · 2023: 28 · 2022: 1
- FWCI
- 16.15
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- JAMA (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Institutes of Health (U24TR001608, UL1TR002736, UL1TR002243)
- National Center for Advancing Translational Sciences
- Topics
- Health Sciences › Medicine › Infectious Diseases › COVID-19 Clinical Research Studies
- Health Sciences › Medicine › Infectious Diseases › SARS-CoV-2 and COVID-19 Research
- Health Sciences › Medicine › Neurology › Long-Term Effects of COVID-19
- Keywords
- COVID-19 pandemic, SARS-CoV-2, outpatients, mild to moderate COVID-19, drug repurposing, symptom duration, hospitalization, urgent care utilization, antiparasitic treatment, age and sex differences
- MeSH terms
- COVID-19, SARS-CoV-2, COVID-19 Vaccines, Female, Humans, Ivermectin, Male, Middle Aged, Outpatients, Vaccines
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