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. 2008 Nov 21;40(6):751–755. doi: 10.1165/rcmb.2008-0340OC

TABLE 1.

BASELINE CHARACTERISTICS OF SUBJECTS INCLUDED IN VARIATION DISCOVERY

Variable Cases (N = 90) Control Subjects (N = 90)
Age, yr 47.9 (4.5) 70.8 (6.7)
Male sex, % 26.7% 100%
Pack-years of smoking 40.4 (22.8) 40.0 (25.5)
FEV1, % predicted* 21.5 (8.3) 98.0 (12.3)

Listed as mean (SD), except for sex.

*

Reference values for EOCOPD from Crapo and coworkers (18), for NAS from O'Connor and coworkers (17).