Table 2.

Disposition codes and survey rates by study arm.

		Bangladesh			Uganda
		Control	Promised incentive	Lottery incentive	Control	Promised incentive	Lottery incentive
Complete interview, n		393	413	359	364	472	412
Partial interview, n		282	175	185	201	131	133
Refusal
	Refusal	402	296	265	145	96	94
	Breaks-off	306	167	171	181	89	116
Unknown other, n		2615	1671	1769	938	742	751
	Estimated unknowna	1833	1171	1240	854	675	684
Ineligible, n
	Under age	587	465	402	99	59	79
	Call did not connectb	152,494	152,494	152,495	47,667	47,667	47,667
	Connected, but no language selectionb	26,114	26,113	26,113	10,156	10,156	10,157
Average cost (US $) per complete interviewc		3.89	3.90	4.05	3.16	3.91	4.12
Contact rate		43.00	47.30	44.10	51.10	53.90	52.50
	Risk ratio (95% CI)	Ref	1.10 (1.04-1.17)	1.03 (0.97-1.09)	Ref	1.05 (0.99-1.13)	1.03 (0.96-1.10)
	P value	Ref	.002	0.40	Ref	.11	.43
Response rate		21.00	26.50	24.50	32.40	41.20	37.90
	Risk ratio (95% CI)	Ref	1.26 (1.14-1.39)	1.17 (1.06-1.29)	Ref	1.27 (1.16-1.39)	1.17 (1.06-1.29)
	P value	Ref	<.001	.002	Ref	<.001	.001
Refusal rate		22.00	20.80	19.60	18.70	12.70	14.60
	Risk ratio (95% CI)	Ref	0.95 (0.85- 1.05)	0.89 (0.80- 0.99)	Ref	0.68 (0.57- 0.80)	0.78 (0.67- 0.92)
	P value	Ref	.30	.04	Ref	<.001	.002
Cooperation rate		28.40	39.30	36.60	40.90	59.90	54.60
	Risk ratio (95% CI)	Ref	1.38 (1.24-1.55)	1.28 (1.15-1.45)	Ref	1.47 (1.33-1.62)	1.34 (1.21-1.48)
	P value	Ref	<.001	<.001	Ref	<.001	<.001

^aEstimated proportion of unknown cases that were age-eligible was 70.1% for Bangladesh and 91.0% for Uganda.

^bEvenly distributed to each study arm due to randomization occurring after language selection.

^cOnly includes cost of the call based on time participants spent on the survey plus airtime incentive, as applicable.