TY - JOUR
T1 - Phenotypes and body mass in women with polycystic ovary syndrome identified in referral versus unselected populations
T2 - systematic review and meta-analysis
AU - Lizneva, Daria
AU - Kirubakaran, Richard
AU - Mykhalchenko, Kateryna
AU - Suturina, Larisa
AU - Chernukha, Galina
AU - Diamond, Michael Peter
AU - Azziz, Ricardo
N1 - Copyright © 2016 American Society for Reproductive Medicine. Published by Elsevier Inc. All rights reserved.
PY - 2016/8/13
Y1 - 2016/8/13
N2 - OBJECTIVE: To compare the prevalence of polycystic ovary syndrome (PCOS) phenotypes and obesity among patients detected in referral versus unselected populations.DESIGN: Systematic review and meta-analysis.SETTING: Not applicable.PATIENT(S): Thirteen thousand seven hundred ninety-six reproductive-age patients with PCOS, as defined by the extended 2003 Rotterdam criteria.INTERVENTION(S): Review of PUBMED, EMBASE, and Cochrane Library, 2003-2016. Only observational studies were included. Data were extracted using a web-based, piloted form and combined for meta-analysis.MAIN OUTCOME MEASURE(S): PCOS phenotypes were classified as follows: phenotype A, clinical and/or biochemical hyperandrogenism (HA) + oligo-/anovulation (OA) + polycystic ovarian morphology (PCOM); phenotype B, HA+OA; phenotype C, HA+PCOM; and phenotype D, OA+PCOM.RESULT(S): Forty-one eligible studies, reporting on 43 populations, were identified. Pooled estimates of detected PCOS phenotype prevalence were consequently documented in referral versus unselected populations, as [1] phenotype A, 50% (95% confidence interval [CI], 46%-54%) versus 19% (95% CI, 13%-27%); [2] phenotype B, 13% (95% CI, 11%-17%) versus 25% (95% CI, 15%-37%); [3] phenotype C, 14% (95% CI, 12%-16%) versus 34% (95% CI, 25-46%); and [4] phenotype D, 17% (95% CI, 13%-22%) versus 19% (95% CI, 14%-25%). Differences between referral and unselected populations were statistically significant for phenotypes A, B, and C. Referral PCOS subjects had a greater mean body mass index (BMI) than local controls, a difference that was not apparent in unselected PCOS.CONCLUSION(S): The prevalence of more complete phenotypes in PCOS and mean BMI were higher in subjects identified in referral versus unselected populations, suggesting the presence of significant referral bias.
AB - OBJECTIVE: To compare the prevalence of polycystic ovary syndrome (PCOS) phenotypes and obesity among patients detected in referral versus unselected populations.DESIGN: Systematic review and meta-analysis.SETTING: Not applicable.PATIENT(S): Thirteen thousand seven hundred ninety-six reproductive-age patients with PCOS, as defined by the extended 2003 Rotterdam criteria.INTERVENTION(S): Review of PUBMED, EMBASE, and Cochrane Library, 2003-2016. Only observational studies were included. Data were extracted using a web-based, piloted form and combined for meta-analysis.MAIN OUTCOME MEASURE(S): PCOS phenotypes were classified as follows: phenotype A, clinical and/or biochemical hyperandrogenism (HA) + oligo-/anovulation (OA) + polycystic ovarian morphology (PCOM); phenotype B, HA+OA; phenotype C, HA+PCOM; and phenotype D, OA+PCOM.RESULT(S): Forty-one eligible studies, reporting on 43 populations, were identified. Pooled estimates of detected PCOS phenotype prevalence were consequently documented in referral versus unselected populations, as [1] phenotype A, 50% (95% confidence interval [CI], 46%-54%) versus 19% (95% CI, 13%-27%); [2] phenotype B, 13% (95% CI, 11%-17%) versus 25% (95% CI, 15%-37%); [3] phenotype C, 14% (95% CI, 12%-16%) versus 34% (95% CI, 25-46%); and [4] phenotype D, 17% (95% CI, 13%-22%) versus 19% (95% CI, 14%-25%). Differences between referral and unselected populations were statistically significant for phenotypes A, B, and C. Referral PCOS subjects had a greater mean body mass index (BMI) than local controls, a difference that was not apparent in unselected PCOS.CONCLUSION(S): The prevalence of more complete phenotypes in PCOS and mean BMI were higher in subjects identified in referral versus unselected populations, suggesting the presence of significant referral bias.
KW - epidemiology
KW - meta-analysis
KW - phenotypes
KW - Polycystic ovary syndrome
KW - prevalence
KW - referral bias
UR - http://www.scopus.com/inward/record.url?scp=84994136249&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84994136249&partnerID=8YFLogxK
U2 - 10.1016/j.fertnstert.2016.07.1121
DO - 10.1016/j.fertnstert.2016.07.1121
M3 - Article
C2 - 27530062
SN - 1556-5653
VL - 106
SP - 1510-1520.e2
JO - Fertility and Sterility
JF - Fertility and Sterility
IS - 6
ER -