ArticlePrevention science : the official journal of the Society for Prevention Research2026
Using the NIH Research Methods Resources Website.
Article in Prevention science : the official journal of the Society for Prevention Research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The Research Methods Resources (RMR) section of the National Institutes of Health (NIH) website provides information on design, analysis, and sample size for designs used in NIH-supported clinical trials including randomized controlled trials, individually randomized group-treatment trials, parallel group- or cluster-randomized trials, group- or cluster-stepped wedge trials, and group regression discontinuity designs. The material provided for each design includes background information, links to webinars and training opportunities, a list of frequently asked questions and answers, the relevant CONSORT or TREND statement, key references for the designs and for state of the practice reviews, methods for sample size and power, and common errors. Sample size calculators are readily available for randomized controlled trials, but not for the other four designs; as a result, the RMR website provides a sample size calculator for each, set up as a tutorial in 8-9 steps. Each step includes text and references that can be explored if the user is new to the calculator or left largely hidden if the user is familiar with the calculator. Each sample size calculator provides worked examples for variations for the design including those based on a simple difference vs a net difference, or on a cross-sectional design vs a cohort design. The worked examples are available for download as an.pdf document and present the formulae used for the calculations. The calculators can be used to estimate sample size requirements for a new trial or to confirm a calculation made by others. The sample size calculators are illustrated with three examples.
Indexed as
Identifiers
42565903What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.