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Table 1 Characteristics of the participants (% and mean ± SD)

From: Persistent Chlamydia Pneumoniae serology is related to decline in lung function in women but not in men. Effect of persistent Chlamydia pneumoniae infection on lung function

 

Men

(n = 500)

Women

(n = 609)

p-value

All

(n = 1109)

Age at baseline

27.9 ± 5.7

27.4 ± 5.4

0.15

27.6 ± 5.6

Smoking history (%)

  

< 0.0001

 

   never

41.8

41.5

 

41.7

   ex

23.6

14.1

 

18.4

   current

34.6

44.3

 

40.0

Pack years between surveys in current smokers

14.7 ± 13.1

17.0 ± 12.5

0.04

15.8 ± 12.9

BMI kg/m2

23.2 ± 2.8

22.0 ± 3.1

< 0.0001

22.5 ± 3.0

Change in BMI over 10 yrs.

1.5 ± 1.2

1.9 ± 1.3

< 0.0001

1.7 ± 1.3