OOIR: Observatory of International Research

Papers

(The H4-Index of Journal of Clinical Epidemiology is 48. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2021-05-01 to 2025-05-01.)

Article	Citations
GRADE concept paper 2: Concepts for judging certainty on the calibration of prognostic models in a body of validation studies	1628
Screening colonoscopy similarly prevented distal and proximal colorectal cancer: a prospective study among 55–69-year-olds	1488
Interrater reliability of ROB2 – an alternative measure and way of categorization	216
A review identified challenges distinguishing primary reports of randomized trials for meta-research: A proposal for improved reporting	194
Antidepressant prescriptions have not fully reflected evolving evidence from cumulative network meta-analyses and guideline recommendations	174
A general explanation of the counterfactual definition of confounding	162
Recording harms in randomized controlled trials of behavior change interventions: a scoping review and map of the evidence	152
Predicting COVID-19 prognosis in the ICU remained challenging: external validation in a multinational regional cohort	143
Corrigendum to ‘Identifying type 1 and 2 diabetes in research datasets where classification biomarkers are unavailable: assessing the accuracy of published approaches’ [Journal of Clinical Epidemiolog	137
Multimorbidity, activity limitation and self-reported health all predict mortality risk, but better measures were required	137
Design, methods, and reporting of impact studies of cardiovascular clinical prediction rules are suboptimal: a systematic review	130
Types and associated methodologies of overviews of reviews in health care: a methodological study with published examples	128
Visualizing the value of diagnostic tests and prediction models, part III. Numerical example with discrete risk groups and miscalibration	96
Measuring the environmental impact of health interventions in randomised controlled trials – a scoping review	95
More than two-dozen prescription drug-based risk scores are available for risk adjustment: A systematic review	94
Randomized COVID-19 vaccination rollout can offer direct real-world evidence	91
The construct of certainty of evidence has not been disseminated to systematic reviews and clinical practice guidelines; response to ‘The GRADE Working Group’ et al	84
Many thanks to our reviewers	84
Editorial Board	82
Empirical evaluation of the methods used in systematic reviews including observational studies and randomized trials	82
Reporting of funding and conflicts of interest improved from preprints to peer-reviewed publications of biomedical research	82
Editorial Board	79
The inclusion of outcomes in search strategies for Cochrane Reviews: authors’ reply	78
Two-decade health-related quality of life and performance on physical function tests in midaged women: findings from a prospective cohort study	74
Results reporting for clinical trials led by medical universities and university hospitals in the nordic countries was often missing or delayed	72

Psychometric evaluation of a new drug-resistant tuberculosis stigma scale	71
Potential interactions between digoxin and direct oral anticoagulants: application of cohort & novel case-crossover designs	71
Double-zero-event studies matter: A re-evaluation of physical distancing, face masks, and eye protection for preventing person-to-person transmission of COVID-19 and its policy impact	71
Statistical robustness of randomized controlled trials in high-impact journals has improved but was low across medical specialties	70
Strong and high-quality evidence synthesis needs Cochrane: a statement of support by the GRADE Guidance Group	70
Harms in Systematic Reviews Paper 2: Methods used to assess harms are neglected in systematic reviews of gabapentin	69
Pharmacovigilance studies without a priori hypothesis: systematic review highlights inappropriate multiple testing correction procedures	65
Harms were detected but not reported in six clinical trials of gabapentin	64
Meta-analysis of individual participant data and informed consent: a small step, but important and neglected	64
A Bayesian-adaptive decision-theoretic approach can reduce the sample sizes for multiarm exercise oncology trials	61
Allocation of scarce resources in a pandemic: rapid systematic review update of strategies for policymakers	59
External validation of six COVID-19 prognostic models for predicting mortality risk in older populations in a hospital, primary care, and nursing home setting	59
Librarian involvement in systematic reviews was associated with higher quality of reported search methods: a cross-sectional survey	58
JBI series paper 2: tailored evidence synthesis approaches are required to answer diverse questions: a pragmatic evidence synthesis toolkit from JBI	58
GRADE guidance 39: using GRADE-ADOLOPMENT to adopt, adapt or create contextualized recommendations from source guidelines and evidence syntheses	56
Advances in methodologies of negative controls: a scoping review	56
A systematic survey identified methodological issues in studies estimating anchor-based minimal important differences in patient-reported outcomes	54
External validation of clinical prediction models: simulation-based sample size calculations were more reliable than rules-of-thumb	54
Handling missing data in clinical research	54
RETRACTED: Part II: a step-by-step guide to latent class analysis	54
The walking man approach to interpreting the receiver operating characteristic curve and area under the receiver operating characteristic curve	53
Searching two or more databases decreased the risk of missing relevant studies: a metaresearch study	52
Methodological quality assessment tools for diagnosis and prognosis research: overview and guidance	50
The use of GRADE approach in Cochrane reviews of TCM was insufficient: a cross-sectional survey	48
Controversy and debate: challenges with the need to improve the reference standard in diagnosis paper 1: two challenges: absence of a clear cut, easily replicable test for the reference standard; unet	48