Supplemental Table 2. Characteristics and Newcastle–Ottawa scale score of studies included in a systematic review of the association of ovarian stimulation with embryonic aneuploidy in in vitro fertilization cycles coupled with for preimplantation genetic testing.
Author Selection Comparability Outcome Quality Score
Representativeness Quality Score of Exposed Cohort Selection of the Non-Exposed Cohort from Same Source as Exposed Cohort Ascertainment of Exposure Outcome of Interest Was Not Present at Start of Study Comparability of Cohorts Assessment of Outcome Follow-Up Long Enough for Outcometo Occur Adequacy of Follow-Up
Baart et al., 2007 * * * * ** * *   8
Weghofer et al., 2008 * * * * ** * * * 9
Verpoest et al., 2008 *   * *   * *   5
Haaf et al., 2009     * * **   * * 6
Weghofer et al., 2009 * * * * ** * * * 9
Rubio et al., 2010 * * * * ** * *   8
Kyrou et al., 2011 * * * * ** * * * 9
Massie et al., 2011 * * * *   * * * 7
Ata et al., 2012 * * * * ** * * * 9
Labarta et al., 2012 * * * * ** * *   8
Sekhon et al., 2017 * * * * ** * * * 9
Labarta et al., 2017 * * * * ** * * * 9
Barash et al., 2017 * * * * ** * * * 9
Venetis et al., 2019 * * * * ** * * * 9
Thorne et al., 2019 * * * * ** * * * 9

*Based on the Newcastle–Ottawa scale. A study can be awarded a maximum of one star for each item within the Selection and Exposure categories. A maximum of two stars can be given for Comparability. Evidence was considered low (0–4), moderate (5–6) or high quality (7–9).