Table II.
Characteristics of studies on live birth rate after oocyte vitrification for fertility preservation included in a systematic review and meta-analysis.
| Author, year of publication, country | Study design and type | Study period | Females before treatment for FP (n) | Age, years (mean/median/min–max) | Number vitrified oocytes (mean) | Age at retrieval, years (mean ± SD) | Age retrieval, years (min–max) | Females with oocyte reutilization (n) |
|---|---|---|---|---|---|---|---|---|
| Garcia-Velasco, 2013, Spain | Retrospective cohort | March 2007–June 2012 | 475 | 31.9/–/– | 8.5 | 31.9 ± 5.1 | 4 | |
| Martinez, 2014, Spain | Retrospective cohort | May 2007–November 2012 | 357 | 31.9/–/15–43 | 5.9 | 35.6 ± 3.4 | 30–41 | 11 |
| Alvarez, 2018, UK | Retrospective cohort | January 2000–December 2014 | 306 | 30.3/–/17–43 | 2 | |||
| Cobo, 2018, Spain | Retrospective cohort | January 2007–May 2018 | 1073 | 32.3/–/– | 9.5 | 34.8 ± 2.1 | 80 | |
| Diaz-Garcia, 2018, Spain | Prospective cohort | January 2005–December 2015 | 1024 | 31.7/–/– | 35.2 ± 3.1 | 49 | ||
| Moravek, 2018, USA | Retrospective cohort | January 2005–January 2016 | 204 | –/31/15–42 | 41.1 | 1 | ||
| Specchia, 2019, Italy | Retrospective cohort | January 2001–March 2019 | 244 | 31.3/–/16–45 | 9.5 | 35.2 ± 4.1 | 25–41 | 11 |
| Kato, 2021, Japan | Retrospective cohort | February 2007–December 2019 | 162 | 26.2/–/16–40 | 6.3 | 29.5 ± 1.1 | 14 | |
| Mayeur, 2021, France | Retrospective cohort | January2009–December 2019 | 6 | –/35.5/– | 6 |
FP, fertility preservation.