Table 7.

Quality assessment of effect estimates of financial incentives on coverage of other preventive health interventions

Intervention	No. of studies	Design	Limitations	Consistency	Generalizability to population of interest	Conditionalities related to outcome (no. of studies)	Overall quality of evidence	Mean difference (95% CI)
Preventive deworming
Unconditional cash transfer	1	Cluster RCT	Only one study	-	Ecuador*	Preventive health visits, but conditionality was not implemented (1)	Low	0.08 (0.01; 0.15)
Conditional cash transfer	1	Cluster RCT	Only one study	-	Nicaragua**	Preventive health visits, but condition was not monitored (1)	Low	0.08 (0.00; 0.16)
Vitamin A supplemention
Unconditional cash transfer	1	Cluster RCT	Only one study	-	Ecuador*	Preventive health visits, but conditionality was not implemented (1)	Low	0.01 (-0.03; 0.04)
Conditional cash transfer	2	RCT /Cluster RCT	Study in Nicaragua included three different CCT interventions but all were analyzed together	Consistent, both studies show benefit	Bangladesh* and Nicaragua**	Preventive health visits, but condition was not monitored (1)	Moderate	0.16 (-0.01; 0.34)
Iron supplementation
Unconditional cash transfer	1	Cluster RCT	Only one study	-	Ecuador*	Preventive health visits, but conditionality was not implemented (1)	Low	0.01 (-0.03; 0.05)
Conditional cash transfer	1	Cluster RCT	Only one study	-	Nicaragua**	Children’s health service attendance (1)	Low	0.36 (0.25; 0.47)

* 12-month reporting period, ** 4-month reporting period