Table 2.

Patients’ characteristics

	Control	Obstructive respiratory dysfunction
	(n = 180)	(n = 45)	P value
Age, yr	73 [60–80]	79 [75–84]	<0.001*
Sex, male/female	77/103	22/23	0.460
Height, cm	156 [148–166]	156 [147–163]	0.598
Weight, kg	60.6 [51.7–69.5]	56.5 [49.7–69.0]	0.329
BMI, kg/m2	24.4 [21.9–27.7]	23.1 [21.7–25.3]	0.116
ASA physical status, I/II/III	23/130/27	1/35/9	0.107
Nonsmoker/ex-smoker/current smoker	19/54/106	5/15/24	0.692

BMI body mass index, ASA American Society of Anesthesiologists

*P < 0.05