Table 6.

Effect of smoking on outpatient service utilization and inpatient service utilization among different age groups.

	N in sample	Outpatient service utilization (Y/N)	Inpatient service utilization (Y/N)
40–49 years	1,663
Never smoked	1,185 (reference)
SI < 400	228	0.257* (0.105)	0.070 (0.169)
SI≥400	250	0.092 (0.107)	0.259 (0.165)
50–59 years	1,441
Never smoked	907 (reference)
SI < 400	171	0.203 (0.116)	0.519*** (0.135)
SI≥400	333	0.015 (0.100)	0.263* (0.130)
60+ years	1,659
Never smoked	1,024 (reference)
SI < 400	225	0.115 (0.097)	0.173 (0.097)
SI≥400	380	0.149 (0.089)	0.105 (0.096)

Standard errors in parentheses. *p < 0.05, **p < 0.01, ***p < 0.001. All the models were adjusted for economic status, medical insurance schemes, individual characteristics, drinking habits, and health status.