Table 1. Prevalence of mental disorders.

		Overall	Bus Drivers	Rickshaw Drivers	p-value**
		n = 505	n = 278	n = 227
Alcohol Abuse	Prevalence	73.2%	67.7%	79.6%
	O-SD	44.3%	46.9%	40.4%	0.090
	BC-SD	17.3%	19.9%	13.3%
	WC-SD	41.6%	43.7%	39.1%
	p-value*	<0.001	0.001	0.289
Major Depressive Episode	Prevalence	13.9%	15.6%	11.9%
	O-SD	34.6%	36.3%	32.4%	0.245
	BC-SD	12.4%	14.8%	8.5%
	WC-SD	33.6%	35.0%	32.1%
	p-value*	∼1.000	0.230	∼1.000
Clinically Significant Anxiety Symptoms	Prevalence	22.8%	23.6%	21.9%
	O-SD	42.0%	42.6%	41.4%	0.647
	BC-SD	20.3%	25.2%	10.7%
	WC-SD	40.4%	40.1%	41.0%
	p-value*	0.092	0.017	∼1.000
Burnout Syndrome	Prevalence	13.9%	16.8%	11.2%
	O-SD	34.7%	37.4%	31.6%	0.131
	BC-SD	15.5%	18.3%	9.5%
	WC-SD	33.2%	35.6%	30.8%
	p-value*	∼1.000	0.281	∼1.000

O-SD: Overall Standard Deviation, BC-SD: Between cluster standard deviation, WC-SD: Within cluster standard deviation.

*p-value for the null hypotheses that between cluster is equal to zero.

**p-value for the null hypotheses that prevalence of measured variable does not vary according to job