The DOI matches its Crossref record; 7 of the 7 references it cites were found in a registry or an index.
Unequal group sizes in randomised trials: guarding against guessing
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Schulz (1995) · doi:10.1001/jama.1995.03520290060030 · Cited by 5,634
Moher, D., Schulz, K. F., & Altman, D. G. (2001) · The Lancet · doi:10.1016/s0140-6736(00)04337-3 · Cited by 5,373
Self-citationMoher, D., Pham, B., Jones, A., Cook, D. J., Jadad, A. R., Moher, M., Tugwell, P., & Klassen, T. P. (1998) · The Lancet · doi:10.1016/s0140-6736(98)01085-x · Cited by 3,560
Generation of allocation sequences in randomised trials: chance, not choice
Schulz, K. F., & Grimes, D. A. (2002) · The Lancet · doi:10.1016/s0140-6736(02)07683-3 · Cited by 774
Self-citationProperties of permuted-block randomization in clinical trials
Matts, J. P., & Lachin, J. M. (1988) · Controlled Clinical Trials · doi:10.1016/0197-2456(88)90047-5 · Cited by 321
Properties of the urn randomization in clinical trials
Wei, L. J., & Lachin, J. M. (1988) · Controlled Clinical Trials · doi:10.1016/0197-2456(88)90048-7 · Cited by 308
Randomization in clinical trials: Conclusions and recommendations
Lachin, J. M., Matts, J. P., & Wei, L. J. (1988) · Controlled Clinical Trials · doi:10.1016/0197-2456(88)90049-9 · Cited by 272
Cited by
Cochrane Handbook for Systematic Reviews of Interventions: Cochrane Book Series
(2008) · doi:10.1002/9780470712184 · Cited by 25,048
(2008) · Cited by 3,790
Lester, R. T., Ritvo, P., Mills, E. J., Kariri, A., Karanja, S., Chung, M. H., Jack, W., Habyarimana, J., Sadatsafavi, M., Najafzadeh, M., et al. (2010) · The Lancet · doi:10.1016/s0140-6736(10)61997-6 · Cited by 1,278
Brouns, F., Bjorck, I., Frayn, K. N., Gibbs, A. L., Lang, V., Slama, G., & Wolever, T. M. S. (2005) · Nutrition Research Reviews · doi:10.1079/nrr2005100 · Cited by 1,093
Randomization and allocation concealment: a practical guide for researchers
Doig, G. S., & Simpson, F. (2005) · Journal of Critical Care · doi:10.1016/j.jcrc.2005.04.005 · Cited by 656
Metadata
- Authors
- Schulz, K. F., & Grimes, D. A.
- Venue
- The Lancet
- Publisher
- Elsevier BV
- Published
- 2002-03
- Volume
- 359
- Issue
- 9310
- Pages
- 966-970
- ISSN
- 0099-5355 (ISSN-L)
- 0140-6736
- OpenAlex
- W2030180893
- Cited by
- 250
- References
- 7
- FWCI
- 9.72
- Type
- journal article
- Language
- en
- Open access
- closed
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.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Unequal group sizes in randomised trials: guarding against guessing. https://app.cochat.ai/papers/10.1016/s0140-6736(02)08029-7
- The paper
- Schulz, K. F., & Grimes, D. A. (2002). Unequal group sizes in randomised trials: guarding against guessing. The Lancet. https://doi.org/10.1016/s0140-6736(02)08029-7
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.