Reference health
Sample size calculations for pilot randomized trials: a confidence interval approach
12/12 checkable references clean · checked 2026-07-22
Every reference with a DOI in the deposited reference list resolved to a known work in Crossref or DataCite at the dated check, and none carried a retraction, withdrawal, or removal notice.
2 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.
The 12 checked references that resolve
resolves10.1186/1471-2288-10-67
What is a pilot or feasibility study? A review of current practice and editorial policy
resolves10.1016/j.ctcp.2009.09.010
A pragmatic multi-centred randomised controlled trial of yoga for chronic low back pain: Trial protocol
resolves10.1002/sim.4780090113
The role of internal pilot studies in increasing the efficiency of clinical trials
resolves10.1016/j.jclinepi.2011.07.011
The size of a pilot study for a clinical trial should be calculated in relation to considerations of precision and efficiency
resolves10.7326/0003-4819-135-11-200112040-00010
Reported Methodologic Quality and Discrepancies between Large and Small Randomized Trials in Meta-Analyses
The 2 references without a DOI — listed, not checked
no DOI — not checked10.1016/j.jclinepi.2012.09.002_bib8
no DOI — not checked10.1016/j.jclinepi.2012.09.002_bib11
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work were clean at the dated check: each resolved to a known work in a public registry, and none
carried a retraction notice at that time. It says nothing about the quality, findings,
or importance of the work itself, and nothing about references deposited without a DOI.
checked 2026-07-22 — re-checked daily as this page is visited; titles and statuses come from Crossref and DataCite and are not part of the signed record
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