Table 8. The influence of maternal factors on accessing maternal health care services and high risk of maternal deaths.

Exposures and Studies	Outcomes	Strength of Difference
Maternal health need-associated factors
Milkowska-Shibata MA, et al., 2020 [38] Win T, Vapattanawong P and YE P, 2015 [27] Ye et al., 2010 [16]	Demands for maternal healthcare services were higher among women who had a long distance to healthcare facilities than among those who were close to healthcare facilities.	OR = 4.5 (2–10.4)
Goland, Hoa and Målqvist, 2012 [39]	Relatively low coverage of reproductive healthcare services was very common among uneducated ethnic minority women.	OR = 6.85 (4.01–11.7)
Nguyen PH, et al., 2012 [25] Sychareun et al., 2012 [21]	Having gender-based violence experiences including physical, emotional, and sexual assault was substantially correlated with the unwillingness of taking antenatal care services, induced abortion and recurrent induced abortion.	OR = 1.61 (1.202.16) OR = 2.22 (1.483.32)