TABLE 1—

Predictors of Smoking-Related Costs of Multiunit Housing Property With Most Recently Vacated Unit: California, 2008–2009

	Descriptive Analysis			Zero-Inflated Negative Binomial Model
Characteristics	Small (< 16 Units), No. (%)	Large (≥ 16 Units), No. (%)	Total, No. (%)	Logistic Model, Coefficient (P)	Negative Binomial, Coefficient (P)
Total	196 (65.0)	147 (35.0)	343 (100.0)
Smoking status*
Never smoker (Ref)	62.7	55.0	60.0	1.0	1.0
Former smoker	33.0	29.0	31.6	−0.138 (.717)	0.562 (.128)
Current smoker	4.3	16.0	8.4	−0.353 (.522)	0.754 (.232)
Number of units at property***				0.004 (.181)	0.004 (.001)
Average (SD)	5.8 (3.5)	100.2 (153.5)	38.8 (93.8)
Median	5.0	48.0	11.0
Has units with rent regulation
Yes	36.2	34.6	35.6	0.212 (.479)	−0.093 (.786)
No (Ref)	63.8	65.4	64.4	1.0	1.0
Building with last vacated unit has central ventilation**
Yes	20.5	37.8	26.6	0.291 (.584)	0.724 (.021)
No (Ref)	79.5	62.2	73.4	1.0	1.0
Building with last vacated unit has individual furnaces***
Yes	88.2	70.5	82.0	0.149 (.718)	0.338 (.574)
No (Ref)	11.8	29.5	18.0	1.0	1.0
On-site owner or manager lives at the property***				0.610 (.052)	0.239 (.454)
Owner only	9.6	0.4	6.4
On-site manager only	10.2	80.4	34.8
Both owner and manager	5.1	2.3	4.1
Neither (Ref)	75.1	17.0	54.7	1.0	1.0
Smoke-free policy***
Complete smoke-free policy (Ref)	44.4	13.4	33.5	1.0	1.0
Partial smoke-free policy	12.0	35.7	20.3	0.857 (.049)	1.015 (.108)
No smoke-free policy	43.7	50.9	46.2	0.722 (.079)	0.252 (.639)
Smoking-related costs***
Yes	16.6	46.7	27.1
No	83.4	53.3	72.9

Note. Weighted analyses only. Significance tests for descriptive analyses compare small and large categories. Reported rates exclude responses coded as missing, don't know, or refused. Regression analyses examined a binary variable for on-site owner or manager. Zero-inflated negative binomial model statistics: ln(α) = 0.454; P < .001; A = 1.575.

*P < .05; **P < .01; ***P < .001.