Table 4.

Subgroup analyses of cooperation rates in Bangladesh

	Control	50 Taka	Stratum-specific RR	P value*	100 Taka	Stratum-specific RR	P value*
Gender
Male	313/757 (41%)	321/586 (55%)	1.32 (1.18 to 1.48)	0.20	318/581 (55%)	1.32 (1.18 to 1.48)	0.88
Female	39/89 (44%)	46/65 (71%)	1.61 (1.22 to 2.14)		41/69 (59%)	1.36 (1.00 to 1.84)
Age (years)
<25	196/674 (29%)	219/474 (46%)	1.59 (1.36 to 1.85)	0.006	190/447 (43%)	1.46 (1.25 to 1.71)	0.40
>25	157/553 (28%)	151/471 (32%)	1.13 (0.94 to 1.36)		172/459 (37%)	1.32 (1.11 to 1.58)
Education
No school	27/74 (36%)	22/57 (39%)	1.06 (0.68 to 1.65)	0.75	30/53 (57%)	1.55 (1.06 to 2.27)	0.28
Primary	93/199 (47%)	89/166 (54%)	1.15 (0.93 to 1.41)		98/171 (57%)	1.23 (1.01 to 1.49)
Location
Urban	170/427 (40%)	205/354 (58%)	1.45 (1.26 to 1.68)	0.036	188/349 (54%)	1.35 (1.16 to 1.57)	0.26
Rural	182/365 (50%)	165/283 (58%)	1.17 (1.01 to 1.35)		172/287 (60%)	1.20 (1.05 to 1.38)

Data are n/N (%) and RR (95% CI). Overall interaction terms were significant for cooperation rates only in the age subgroup: gender, p=0.31; age, p=0.015; education, p=0.32; location, p=0.11.

*P values obtained from an interaction term between intervention groups and demographic characteristic.

RR, risk ratio.