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Table 2 Demographics of COPD patients and control subjects

From: Association of genetic polymorphisms with chronic obstructive pulmonary disease in the Chinese Han population: a case–control study

 

COPD

Controls

P value

Number

331

213

 

Age

61±10

58±12

 

Male(%)

298(90%)

209(98%)

 

Female(%)

33(10%)

4(2%)

 

Pack-years(±SD)

41±34

38±17

 

FEV1/FVC

54±13.8*

85±7.6*

p<0.05

FEV1/predicted(%)

49±18.1#

88±17.0#

p<0.05

  1. Data were presented as the means ± SD. FEV1, forced expiratory volume in 1 sec; FVC, forced vital capacity; *p<0.05 significant difference vs control.
  2. #p<0.05 significant difference vs control.