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. Author manuscript; available in PMC: 2013 Dec 4.
Published in final edited form as: World Bank Econ Rev. 2012 Jun 1;26(2):165–190. doi: 10.1093/wber/lhr041

Table 5.

Impact of Incentive Offer on Reported Sexual Behavior, Separate Rounds HIV Negatives

Dependent Variable: HIV Positive (Round 3) Pregnant (Women) Any Vaginal Sex Days Vaginal Sex Used Condom Condoms at Home Safe/No Sex
(1) (2) (3) (4) (5) (6) (7)

Round 1 “Any Incentive” Coefficient -- 0.020 0.039 0.145 −0.031 0.006 −0.029
-- [0.027] [0.033] [0.111] [0.025] [0.021] [0.033]

 Observations 601 1,101 1,101 621 1,101 1,101
 R-squared 0.040 0.085 0.072 0.133 0.066 0.075

 Mean of dep var in control group -- 0.084 0.539 1.493 0.144 0.117 0.576
Round 2 “Any Incentive” Coefficient -- −0.007 −0.011 −0.061 −0.010 −0.004 0.003
-- [0.023] [0.029] [0.118] [0.029] [0.020] [0.033]

 Observations 579 1,064 1,064 574 1,064 1,064
 R-squared 0.037 0.102 0.077 0.122 0.057 0.106

 Mean of dep var in control group -- 0.097 0.551 1.562 0.141 0.121 0.521
Round 3 “Any Incentive” Coefficient 0.001 −0.022 0.008 0.031 −0.012 0.011 −0.008
[0.005] [0.022] [0.028] [0.117] [0.028] [0.017] [0.028]

 Observations 1,071 597 1,091 1,091 552 1,091 1,091
 R-squared 0.009 0.048 0.116 0.060 0.031 0.033 0.100

 Mean of dep var in control group 0.006 0.105 0.515 1.562 0.104 0.097 0.543
*

significant at 10%;

**

significant at 5%;

***

significant at 1%

Note: Each cell presents a separate OLS regression of the dependent variable on a dummy variable for whether the respondent was offered any incentive controlling for whether the respondent is male, married, has some schooling, HIV status at baseline, number of living children, and distric fixed effects. Robust standard errors clustered by village, in brackets.