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

Table 3 Risk of bias assessment with ROBINS-I

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

Risk of bias options are L, low; M, moderate; S, serious; C, critical; and NI, no information
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
The seven bias domains are individually assessed for each study

ISSN: 2046-4053