Table 8.

Synthesis of the outcomes on post-natal care attendance.

References	Intervention	Impact on post-natal care attendance
Alam et al. (38)	SMS/voice reminders	No significant association between exposure to phone messages during pregnancy and PNC visits (IRR 1.2)
Modi et al. (19)	App + SMS reminders + data collection module	The proportion of at least two visits of neonates in the first week of delivery was significantly higher in the intervention group compared to the control group (32.4 vs. 22.9%; adjusted effect size 10.2). Significant improvement in coverage home visits in the intervention group during PNC period (adjusted effect size 6.4).
Odeny et al. (55)	SMS reminders	Significant increase in women attending a post-partum visit in the intervention group compared to controls (19.6 vs. 11.8%; RR 1.66)
Olajubu et al. (23)	App + SMS reminders	The odds for utilizing four PNCs were about 11 times higher for women in the intervention group compared to controls (30.9 vs. 3.7%; AOR 10.869). For each of the recommended visits, the odds of utilization were significantly higher among the mothers in the intervention group.
Shiferaw et al. (58)	App + SMS reminders + data collection module	Women in the intervention centers significantly more likely to receive PNC visits compared to controls (41.2 vs. 21.1%; AOR 2.77).

AOR, Adjusted Odds Ratio; IRR, Incident Rate Ratio; PNC, post-natal care; RR, Relative Risk.