Table 2.

Multilevel Poisson models for counts of assaults in 10m buffer of 65 bars nested within 4 cities

	Model 1				Model 2				Model 3				Model 4
	IRR	(95% CI)		p-value	IRR	(95% CI)		p-value	IRR	(95% CI)		p-value	IRR	(95% CI)		p-value
Barroom Social Environment
Social disorder scale	1.573	1.240	1.995	<0.001	1.167	0.891	1.530	0.262					0.857	0.596	1.231	0.403
Patron count (×100)	3.799	2.207	6.538	<0.001	5.362	2.820	10.194	<0.001					6.420	2.714	15.185	<0.001
Drinking pace (1 drink/person/hour)	0.909	0.589	1.403	0.666	0.795	0.516	1.224	0.297					1.231	0.732	2.071	0.434
Barroom Physical and Economic Environment
Bud Light available					4.811	0.619	37.385	0.133					2.396	0.282	20.385	0.424
Restaurant					0.710	0.308	1.638	0.422					0.415	0.148	1.163	0.094
Pool table					2.258	0.980	5.202	0.056					2.446	0.842	7.111	0.100
Dancing and music scale					1.388	0.988	1.950	0.059					1.826	1.187	2.807	0.006
Bar-Area Neighborhood Conditions
Population density (1000 per mile2)									0.906	0.823	0.997	0.042	0.830	0.709	0.972	0.020
Median distance to 5 nearest bars (1km)									0.634	0.461	0.872	0.005	0.436	0.277	0.685	<0.001
Median household income ($10,000/year)									0.914	0.809	1.033	0.150	0.794	0.661	0.953	0.013
Physical disorder (SSO scale)									2.654	1.843	3.822	<0.001	1.717	1.044	2.822	0.033
Constant	0.331	0.098	1.117	0.075	0.082	0.006	1.084	0.058	1.411	0.282	7.054	0.675	1.471	0.047	45.858	0.826
Likelihood ratio test for hierarchical Vs single level model				<0.001				<0.001				<0.001				<0.001

Bolded values have p>0.05.