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Table 1 The demographic character of study subjects

From: Absence of association between SERPINE2genetic polymorphisms and chronic obstructive pulmonary disease in Han Chinese: a case-control cohort study

 

Cases

Controls

Subjects (n)

327

349

Male (%)

80.1

71.9

Age

71.4 ± 9.1 *

67.0 ± 9.8 #

Smoking (pack-yrs)

30.2 ± 6.7

29.2 ± 6.9

FEV1/FVC

45.3 ± 15.6

86.4 ± 5.8

FEV1 % pred

54.9 ± 18.9

94.9 ± 8.7

FEV1 > 50% pred

170

0

FEV1 ≤ 50% pred

157

0

  1. * data available for 210 patients, # data available for 208 subjects.
  2. Data are presented as mean ± SD.