TABLE 5.

Comparisons of actual donation behavior among three groups by ATT estimations in the trial

	Point estimate	Standard error	95% CI	Z	P
Group 1 vs Group 2	0.047	0.008	0.032‐0.062	6.16	<.001
Group 1 vs Group 3	0.055	0.012	0.033‐0.078	4.77	<.001
Group 2 vs Group 3	0.040	0.010	0.020‐0.060	3.92	<.001

ATT, average treatment effect on the treated; CI, confidence interval.