High-dose vitamin D supplementation and measures of insulin sensitivity in polycystic ovary syndrome: a randomized, controlled pilot trial
Assessed by RV013 · Clinical Chair in Health Services Research
Assessed on 2 Mar 2026
OverallReviewer's overall integrity assessment, derived from all research questions No concerns
DOI 10.1016/j.fertnstert.2014.02.021 (opens in new tab)
Resource ripekg:research-integrity-assessment/RIPEAAA9DF610F785F77C
5 Research Questions · 2 Evidence Items
Q1.1 — Does the study have an associated retraction?
Rationale: No rationale provided
Q1.2 — Does the study have an associated expression of concern or other relevant post-publication notice?
Rationale: No rationale provided
Q1.3 — Do other studies by the research team highlight causes for concern?
Rationale: No rationale provided
Q2.2 — Are there concerns relating to the timing or absence of study registration?
Rationale: No rationale provided
Supporting Evidence (2)
Clinical Trial RegistrationSource: Clinical trial registry (e.g. ClinicalTrials.gov, ISRCTN)
Registration ID: NCT00907153
Registry: ClinicalTrials.gov
Registry Link: https://clinicaltrials.gov/study/NCT00907153 (opens in new tab)
Registration Date: 21-05-2009
Prospective:Whether the trial was registered before participant recruitment began Yes
Assessment Rationale:How INSPECT-AI determined the prospective registration status by comparing dates Comparison performed at month level. Registration: 2009-05, LLM Recruitment Start: 2009-07. Deemed prospective at month level.
Study Design EvidenceDates and timelines extracted by INSPECT-AI from the publication text
Recruitment Start: 07-2009
Recruitment Start Rationale:INSPECT-AI's reasoning for how it identified the recruitment start date Participants were recruited from July 2009 to November 2010.
Recruitment End: 11-2010
Recruitment End Rationale:INSPECT-AI's reasoning for how it identified the recruitment end date Participants were recruited from July 2009 to November 2010.
Study End: N/A
Study End Rationale:INSPECT-AI's reasoning for how it identified the study end date No explicit study end date found.
Overall — What is the overall integrity assessment of the study?
Rationale: No concerns