Interventions to enhance medication adherence in pregnancy- a systematic review

Table 3 Assessment of risk of bias for studies with a control group (EPOC)

Study ID	Study design	Random sequence generation	Allocation concealment	Blinding of participants and personnel	Blinding of outcome assessment	Incomplete outcome data	Selective reporting	Baseline outcome measurements similar	Baseline Characteristics similar	Knowledge of allocated interventions adequately prevented	Protection against contamination	Other bias
Carter et al., 2020 [41]	RCT	Low	Low	High	Unclear	Low	Low	High	Low	High	High
de Lima et al., 2016 [42]	Comparative (non-randomised)	High	High	Unclear	Unclear	Low	High	Unclear	High	Unclear	Low	Selection
Kim et al., 2019 [45]	RCT	Unclear	Unclear	Unclear	Unclear	High	Low	Unclear	Low	Unclear	High
Potter et al., 2019 [49]	Comparative (non-randomised)	High	High	High	Unclear	Low	Low	Low	High	Unclear	High	Selection; unbalanced group sizes
Pintye et al., 2020 [48]	Comparative (non-randomised)	High	High	High	High	High	Low	Unclear	Unclear	High	Low
Psaros et al., 2022 [50]	RCT	Low	Unclear	Unclear	High	High	Low	High	Low	Unclear	Unclear	Small sample
Weiss et al., 2014 [51]	RCT	Unclear	Unclear	Unclear	Unclear	Low	Low	Low	Low	Unclear	Low
Yotebieng et al., 2016 [52]	RCT	Unclear	unclear	Unclear	Unclear	High	Low	Low	Low	Unclear	Low	Loss to follow up no ITT.

ISSN: 1471-2393