Characteristics of publications identified for the meta-analysis.

<p><b>Abbreviations:</b> PB, population-based case-control study; NCC, nested case-control study; PCR-RFLP, polymerase chain reaction-restriction fragment length polymorphism; NECC, new England case-control study; NHS, nurses’ health study; WHS, women’s health study; MALOVA, malignant ovarian cancer study; SEARCH, studies of epidemiology and risk factors in cancer heredity: ovarian cancer study; GEOCS, genetic epidemiology of ovarian cancer study; HAW, Hawaii ovarian cancer study; UKOPS, united kingdom ovarian cancer population study.