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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 3.

Attrition/Survey Completion Rates

Panel A: Entire Sample All Zero Incentive Medium Incentive High Incentive p-value of joint test
(1) (2) (3) (4) (5)

Enrolled in Incentives Project 1307 455 420 432 --
Completed Round 1 0.929 0.921 0.921 0.944 0.31
Completed Round 2 0.889 0.884 0.902 0.882 0.57
Completed Round 3 0.916 0.890 0.931 0.928 0.05
Completed at Least One Round 0.979 0.971 0.988 0.977 0.23
Completed Each Round 0.829 0.802 0.845 0.843 0.16
Number rounds completed 2.734 2.695 2.755 2.755 0.29
Follow-up HIV Test 0.884 0.820 0.910 0.928 0.00
Panel B: HIV Negatives All Zero Incentive Medium Incentive High Incentive p-value of joint test
(1) (2) (3) (4) (5)

Enrolled in Incentives Project 1193 407 383 403 --
Completed Round 1 0.935 0.929 0.927 0.948 0.41
Completed Round 2 0.898 0.892 0.914 0.888 0.45
Completed Round 3 0.925 0.899 0.940 0.935 0.06
Completed at Least One Round 0.983 0.975 0.992 0.983 0.19
Completed Each Round 0.840 0.816 0.856 0.849 0.25
Number rounds completed 2.757 2.720 2.781 2.772 0.33
Follow-up HIV Test 0.902 0.848 0.924 0.935 0.00

Standard errors in parenthesis

*

signifcant at 10%;

**

signifcant at 5%;

**

signifcant at 1%

Notes: This table presents survey completion rates by incentives amounts. The sample includes 1,307 respondents who participated in the incentives program. Panel B exludes 114 individuals who were HIV positive at baseline.