Smokers females
n: 215
Smokers males
n: 283
P value*
Age 55.6 ± 10.6 56.2 ± 8.2 0.1
Education
None
Primary
Secondary
high school

14.4
28.7
32.4
24.5

22.7
28.6
27.9
20.8

0.001
NS
NS
0.0001
Monthly income (%)<$ 200 50.5 51.9 0.04
Pred FEV1 88.5 ± 18.8 89.8 ± 11.9 0.3
FEV1/FVC 86.9 ± 7.9 81.1 ± 8.3 0.0001
FVC% 86.0 ± 17.1 85.7 ± 10.5 0.5
MMF% 77.6 ± 27.7 72.7 ± 28.2 0.07
Dyspnea score 1.9 ± 1.4 0.8 ± 1.0 0.001
Chronic bronchitis,(%) 69/215(32.0) 95/283(33.6) 0.7
Smokingpack/year 22.4 ± 16.6 22.3 ± 11.6 0.9
Anxiety score 8.4 ± 4.2 6.5 ± 3.4 0.001
Depression score 8.6 ± 4.9 6.7 ± 3.3 0.002
*when compared smokers females and males
Table 1: Characteristics of all subjects.