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Table 2 Demographic characteristics of participants

From: Case-finding of chronic obstructive pulmonary disease with questionnaire, peak flow measurements and spirometry: a cross-sectional study

Variable

COPD (n = 68)

Normal lung function (n = 457)

P

Male gender, n (%)

47 (69.1%)

311 (68.1%)

1.000

Age in years, mean ± SD

52 (±SD 8.8)

49.2 (SD 7.7)

0.006

Nationality, n (%)

  

0.488

 UAE

9 (13.2%)

79 (17.3%)

 Other

59 (86.8%)

378 (82.7%)

Height in cm, mean ± SD

164.9 (±SD 8.6)

164.82 (±SD 8.7)

0.890

Weight in kg, mean ± SD

76.3 (±SD 12.9)

77 (±SD15.4)

0.737

BMI in kg/m2, mean ± SD

28.4 (±SD 4.6)

28.4 (±SD 4.7)

0.902

Education, n (%)

  

0.397

 Primary

34 (50.0%)

231 (50.5%)

 Diploma

3 (4.4%)

24 (5.3%)

 College

30 (44.1%)

174 (38.1%)

 Higher Education

1 (1.5%)

28 (6.1%)

Any smoking, n (%)

17 (25.0%)

111 (24.3%)

0.881

Cigarette smoking

   

 Smokers, n (%)

18 (26.4%)

115 (25.2%)

1.000

 Number of cigarettes/day, mean ± SD

14.4(±SD 11)

12 (±SD 10.4)

0.493

Midwakh smokers, n (%)

0 (0.0%)

1 (0.3%)

1.000

Water pipe smoking

   

 Smokers, n (%)

1 (3.4%)

13 (3.9%)

1.000

 Heads of waterpipe/month, mean ± SD

4.1 (±SD 22.3)

1.1 (±SD 7.5)

0.098

Other Smoking

   

Smokers, n (%)

1 (3.4%)

3 (0.9%)

0.294

Other tobacco per week, mean ± SD

0.9 (±SD 5.1)

0.2 (±SD 1.9)

0.082

Exposure to domestic biomass and coal pollution (cooking/heating), n (%)

12 (17.6%)

52 (11.4%)

0.162

Occupational exposure to dust, n (%)

26 (38.2%)

102 (22.3%)

0.006

Hospital admissions due to pulmonary problems in childhood, n (%)

4 (5.9%)

20 (4.4%)

0.536