Table 5. Impaired driving behaviors and beliefs among drivers with different infractions (n = 178).

Variable	Positive breathalyzer (n = 34)	Refused breathalyzer (n = 72)	Other reasons (n = 72)	p-value
Drunk driving (last year) (n = 157)†	23 (69.7)	63 (87.5)*	14 (26.9)*	< 0.001
Drugged driving (last year) (n = 90)†	4 (23.5)	13 (36.1)	8 (21.6)	0.350
Ride with an impaired driver (last year)	14 (41.2)	37 (51.4)	40 (55.6)	0.384
Stopped at a roadblock (last year)	19 (55.9)	35 (48.6)	23 (31.9)*	0.033
Believes enforcement can reduce drunk driving	26 (76.5)	48 (66.7)	45 (62.5)	0.361
Believes enforcement can reduce drug driving	27 (79.4)	52 (72.2)	50 (69.4)	0.562

Data expressed as absolute and relative frequencies, n (%), and compared using the chi-squared test.

* Adjusted residual > |2|.

^† The total n for these analyses is the subset of subjects who reported using the drug in the previous year.