Table 1 Basic information of the included studies
From: Birth weight and premature ovarian insufficiency: a systematic review and meta-analysis
Author | Year | Country | Study design | Total number of subjects | follow-up period | Birth weight ascertainment method | BW reference category for adjusted estimate | NO. of POI | NOS score |
|---|---|---|---|---|---|---|---|---|---|
Sarah E. Tom | 2010 | British | Cohort | 3619 | 1958–2006 | Recorded from medical records | < 2.5;2.5–2.9;3.0-3.49;3.5–3.9;≥4.0 | 215 | 8 |
Christine R Langton | 2022 | US states | Cohort | 19892017 | 1989–2017 | Recorded from medical records | < 2.5;2.5–2.9;3.0-3.49;3.5–3.9;≥4.0 | 2135 | 7 |
Gunilla Sydsjö | 2020 | Sweden | Cohort | 1033878 | 1973–2012 | Recorded from medical records | < 1.5;1.5–2.5;≥2.5 | 18627 | 9 |
S. Sadrzadeh | 2017 | Netherlands | Case-control | 151 | NA | self-report | < 1.5;1.5-2.0;2.0-2.5;2.5-4.0;≥4.0 | 59 | 4 |
Elisabeth K Bjelland | 2020 | Norway | Cohort | 164608 | 1936–2014 | self-report | < 2.5;2.5–2.9;3.0-3.49;3.5–3.9;4.0-4.49;≥4.5 | 1906 | 7 |