Table 2.

Baseline characteristics.

	Control group 1	Daily, short 2	Weekly, short 3	Daily, long 4	Weekly, long 5	P-value^a (differences across analytical sample groups) 6	P-value^a (analytical sample vs. enrolled sample) 7
Widowed	0.38 (N=139)	0.37 (N = 70)	0.38 (N = 73)	0.43 (N = 72)	0.39 (N = 74)	0.96	0.86
Married	0.45 (N =139)	0.44 (N = 70)	0.49 (N = 73)	0.38 (N = 72)	0.45 (N = 74)	0.96	0.69
Catholic	0.19 (N =139)	0.20 (N = 70)	0.11 (N = 73)	0.19 (N = 72)	0.15 (N = 74)	0.50	0.45
Luo	0.63 (N =139)	0.66 (N = 70)	0.63 (N = 73)	0.63 (N = 72)	0.61 (N = 74)	0.98	0.06
Iron roof	0.81 (N =139)	0.73 (N = 70)	0.68 (N = 73)	0.85 (N = 72)	0.69 (N = 74)	0.04	0.04
Completed secondary	0.24 (N =139)	0.27 (N = 70)	0.21 (N = 73)	0.21 (N = 72)	0.20 (N = 74)	0.83	0.73
Completed primary	0.55 (N =139)	0.60 (N = 70)	0.53 (N = 73)	0.61 (N = 72)	0.53 (N = 74)	0.78	0.81
Women	0.66 (N =139)	0.67 (N = 70)	0.59 (N = 73)	0.69 (N = 72)	0.69 (N = 74)	0.67	0.29
Age	35.65 (N =137)	35.64 (N = 69)	37.74 (N = 73)	35.73 (N = 71)	36.76 (N = 74)	0.61	0.74

Column 7 compares the five groups of the analytical sample of 428 study participants. Column 8 compares the analytical sample of 428 study participants to the entire sample of 720 participants who were enrolled in the study.

For each of the binary variables (widowed, married, Catholic, Luo, iron roof, completed primary, completed secondary, and women), P-values are based on χ²-tests of equality of means across the five groups in the analytical sample. For continuous variables (age), P-values are based on F-test of equality of means across the five groups in the analytical sample indicator variables and F-test for continuous variables.