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Table 3 Risk of bias assessment with ROBINS-I

From: A systematic review on the effectiveness of implementation strategies to postpone elective caesarean sections to ≥ 39 + (0–6) weeks of gestation

Study Outcome 1 2 3 4 5 6 7 Overall
Allen 2020 CS rate M L L L NI L M M
Dunn 2013 CS rate C L L S NI L L C
Gurol-Urganci 2014 CS rate M M L L S L L S
Hutcheon 2015 CS rate M L L L NI L M M
MacAllister 2019 CS rate C L L S NI L L C
Nicholl 2010 CS rate, NICU admission C L L NI NI M L C
Nicoll 2004 CS rate, NICU admission C L L NI NI M L C
Snowden 2016 CS rate, NICU admission M L L M L S L S
Tanger 2010 CS rate C L L NI NI L L C
Yamasato 2015 CS rate S L L M M L L S
  1. Risk of bias options are L, low; M, moderate; S, serious; C, critical; and NI, no information
  2. 1 bias due to confounding, 2 bias in selection of participants into the study, 3 bias in classification of interventions, 4 bias due to deviations from intended interventions, 5 bias due to missing data, 6 bias in measurement of outcomes, 7 bias in selection of the reported result, CS caesarean section assessment according to ROBINS-I tool
  3. The seven bias domains are individually assessed for each study