Table 9. Change in quality of life in substance users pre- and post-prohibition of alcohol.

^*P<0.05 considered statistically significant

SD: standard deviation

Variable	Post-prohibition, mean ±SD	Pre-prohibition, mean ±SD	Mean difference	P-value*
Total score	73.11 ±6.73	89.96 ±5.69	-16.96	<0.001
Physical health	20.74 ±2.22	23.45 ±2.02	-2.72	<0.001
Psychological health	15.14 ±2.14	20.51 ±1.92	-5.30	<0.001
Social relationship	9.82 ±1.33	12.09 ±1.72	-2.30	<0.001
Environmental	19.88 ±2.75	24.75 ±3.02	-4.96	<0.001
General health	7.82 ±0.17	9.27 ±0.94	-1.48	<0.001