Table 2.

Internal consistency of the secondhand smoke exposure questionnaire in this study.

Item	CITC	Item removed α coefficient	Cronbach’s α coefficient
Last 7-d at job someone smoked indoors	0.335	0.657	0.676
Last 7-d at rest someone smoked indoors	0.305	0.666
Last 7-d in bar someone smoked indoors	0.344	0.660
Last 7-d someone smoked in car	0.500	0.599
Last 7-d in home someone smoked indoor	0.473	0.611
Last 7-d in other indoor someone smoked	0.942	0.605
Standardized Cronbach’s α coefficient			0.674

CITC corrected item total correlation.