Table 2.
Index group means and matching estimator results for days plucking tea and non-plucking days for men
| Duration on ART | N | Days Plucking (IG Mean)\1 |
Estimated Mean Difference (IG – CG)\1 |
P > |z|\2 | 95% CI LL\2 | 95% CI UL\2 | Days Non-Plucking Tasks (IG Mean) |
Estimated Mean Difference (IG – CG)\1 |
P > |z|\2 | 95% CI LL\2 | 95% CI UL/2 |
| -24 | 41 | 16.59 | -0.43 | 0.78 | -3.42 | 2.57 | 4.76 | -0.47 | 0.75 | -3.30 | 2.36 |
| -23 | 41 | 17.02 | 0.46 | 0.76 | -2.49 | 3.40 | 5.85 | 1.26 | 0.39 | -1.58 | 4.09 |
| -22 | 41 | 15.22 | -1.30 | 0.43 | -4.50 | 1.90 | 6.17 | 2.22 | 0.13 | -0.64 | 5.08 |
| -21 | 41 | 16.20 | -0.62 | 0.72 | -4.03 | 2.80 | 6.56 | 2.82 | 0.08 | -0.31 | 5.94 |
| -20 | 41 | 15.10 | -2.33 | 0.16 | -5.58 | 0.92 | 6.88 | 2.81 | 0.07 | -0.24 | 5.85 |
| -19 | 41 | 15.80 | -2.41 | 0.12 | -5.48 | 0.65 | 4.93 | 0.82 | 0.56 | -1.90 | 3.53 |
| -18 | 41 | 14.61 | -3.30 | 0.04 | -6.37 | -0.22 | 6.83 | 2.25 | 0.13 | -0.67 | 5.16 |
| -17 | 41 | 15.66 | -2.86 | 0.06 | -5.88 | 0.16 | 5.73 | 3.07 | 0.02 | 0.54 | 5.60 |
| -16 | 41 | 17.07 | -2.24 | 0.14 | -5.24 | 0.75 | 3.10 | 0.32 | 0.77 | -1.81 | 2.45 |
| -15 | 41 | 16.39 | -2.34 | 0.18 | -5.74 | 1.07 | 3.34 | 0.61 | 0.63 | -1.85 | 3.07 |
| -14 | 41 | 16.71 | -1.66 | 0.26 | -4.57 | 1.25 | 4.59 | -0.17 | 0.89 | -2.62 | 2.27 |
| -13 | 41 | 17.12 | 0.13 | 0.93 | -3.05 | 3.32 | 4.29 | -0.38 | 0.77 | -2.98 | 2.22 |
| -12 | 41 | 19.12 | 1.24 | 0.42 | -1.79 | 4.28 | 3.90 | -0.19 | 0.89 | -2.88 | 2.50 |
| -11 | 41 | 18.32 | 0.03 | 0.98 | -2.82 | 2.88 | 3.98 | 0.02 | 0.99 | -2.66 | 2.71 |
| -10 | 41 | 16.00 | -1.97 | 0.22 | -5.12 | 1.18 | 5.32 | 1.67 | 0.27 | -1.28 | 4.62 |
| -9 | 41 | 16.63 | -1.06 | 0.49 | -4.08 | 1.95 | 6.63 | 3.07 | 0.03 | 0.32 | 5.81 |
| -8 | 41 | 15.68 | -3.76 | 0.02 | -6.99 | -0.53 | 5.98 | 2.96 | 0.03 | 0.36 | 5.56 |
| -7 | 41 | 15.49 | -3.84 | 0.02 | -7.02 | -0.66 | 3.63 | 0.59 | 0.63 | -1.81 | 2.99 |
| -6 | 41 | 17.27 | -1.90 | 0.21 | -4.90 | 1.09 | 4.49 | 1.31 | 0.32 | -1.28 | 3.91 |
| -5 | 41 | 15.63 | -2.46 | 0.13 | -5.63 | 0.72 | 4.73 | 1.32 | 0.33 | -1.32 | 3.96 |
| -4 | 41 | 14.20 | -3.66 | 0.03 | -7.02 | -0.30 | 5.34 | 1.67 | 0.27 | -1.27 | 4.62 |
| -3 | 41 | 13.20 | -2.85 | 0.08 | -6.05 | 0.34 | 5.32 | 1.15 | 0.46 | -1.87 | 4.17 |
| -2 | 41 | 14.59 | -2.70 | 0.12 | -6.09 | 0.69 | 4.12 | -0.04 | 0.98 | -2.86 | 2.77 |
| -1 | 41 | 14.80 | -2.33 | 0.14 | -5.38 | 0.73 | 4.63 | 1.03 | 0.48 | -1.84 | 3.91 |
| 0 | 41 | 6.66 | -11.27 | 0.00 | -13.85 | -8.69 | 2.78 | -1.48 | 0.20 | -3.74 | 0.78 |
| 1 | 41 | 7.76 | -9.34 | 0.00 | -12.21 | -6.48 | 5.12 | 0.95 | 0.51 | -1.88 | 3.78 |
| 2 | 41 | 9.44 | -8.37 | 0.00 | -11.32 | -5.42 | 6.32 | 2.22 | 0.11 | -0.52 | 4.96 |
| 3 | 41 | 11.90 | -4.65 | 0.00 | -7.74 | -1.56 | 7.68 | 3.68 | 0.01 | 0.86 | 6.51 |
| 4 | 41 | 12.56 | -4.37 | 0.01 | -7.55 | -1.19 | 6.93 | 2.80 | 0.04 | 0.10 | 5.49 |
| 5 | 41 | 12.78 | -4.21 | 0.02 | -7.64 | -0.79 | 5.49 | 0.98 | 0.49 | -1.82 | 3.78 |
| 6\3 | 40 | 14.90 | -2.44 | 0.11 | -5.47 | 0.58 | 4.65 | 0.44 | 0.76 | -2.36 | 3.24 |
| 7 | 40 | 15.73 | -0.99 | 0.54 | -4.16 | 2.18 | 3.38 | -1.72 | 0.24 | -4.58 | 1.14 |
| 8 | 40 | 15.95 | -0.58 | 0.72 | -3.73 | 2.57 | 2.93 | -2.18 | 0.12 | -4.95 | 0.59 |
| 9 | 40 | 15.28 | -1.00 | 0.56 | -4.35 | 2.34 | 3.83 | -1.52 | 0.31 | -4.44 | 1.39 |
| 10 | 40 | 16.75 | 0.35 | 0.83 | -2.86 | 3.55 | 3.28 | -1.65 | 0.26 | -4.50 | 1.19 |
| 11 | 40 | 14.48 | -1.90 | 0.27 | -5.29 | 1.48 | 4.65 | -0.77 | 0.61 | -3.75 | 2.20 |
| 12 | 40 | 15.18 | -1.10 | 0.49 | -4.22 | 2.02 | 5.40 | -0.25 | 0.86 | -3.16 | 2.65 |
1/ IG = index group, and CG = matching comparison group. The estimated mean difference is the bias-adjusted sample average treatment effect on the treated using nearest the neighbor matching estimator nnmatch in Stata 10, with 4 comparison workers matched to each index worker based on age, months of work experience, and gang.
2/ p-value for a z-test that mean difference = 0. 95% CI LL and UL are the lower and upper levels of the 95% confidence interval for the estimated average treatment effect on the treated.
3/ One index worker retired at the end of month 5.