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Table 1 Characteristics of current smokers in 1991 (SAPALDIA 1)

From: Accelerated decline in lung function in smoking women with airway obstruction: SAPALDIA 2 cohort study

 

Participants in SAPALDIA 1 and 2*

Participants only in SAPALDIA 1 †

Characteristic measured in 1991

Men (n = 978)

Women (n = 814)

Men (n = 844)

Women (n = 596)

Median age [yrs] (IQR)

41.8

(32.1, 49.6)

38.4

(31.0, 46.6)

40.2

(30.7, 49.2)

39.8

(30.8, 47.3)

Mean height [cm] (SD)

175.2

(6.8)

163.2

(6.6)

174.4

(7.2)

163.4

(6.5)

Mean weight [kg] (SD)

76.7

(11.1)

59.6

(9.5)

75.4

(11.7)

61.8

(13.8)

% atopic

23.2

 

18.4

 

22.6

 

22.5

 

% severe respiratory infection as an infant

6.2

 

9.5

 

5.3

 

6.7

 

% basic schooling only

13.8

 

17.7

 

22.1

 

22.1

 

% exposed to dust & fumes at work

45.5

 

25.1

 

48.2

 

25.2

 

% mother smoked

13.4

 

18.3

 

14.4

 

22.4

 

% father smoked

61.3

 

58.5

 

63.1

 

59.9

 

Median cig/day (IQR)

20

(14, 30)

20

(10, 20)

20

(15, 30)

20

(10, 23)

Median pack-years (IQR)

20.6

(8.3, 36.1)

14.4

(6.4, 25.0)

21.3

(9.1, 38.2)

15.9

(7.2, 26.7)

% inhaler

82.9

 

88.8

 

87.9

 

85.9

 

Median age started smoking [yrs] (IQR)

18

(16, 20)

18

(16, 20)

18

(16, 20)

18

(16, 20)

Median carbon monoxide [ppm] (IQR)

19

(9, 30)

16

(8, 28)

24

(13, 35)

20

(10, 30)

Mean FVC [mL] (SD)

5238

(861)

3868

(624)

5079

(874)

3745

(631)

Mean FEV1[mL] (SD)

4031

(759)

3099

(552)

3902

(837)

2957

(575)

Mean FEF25[mL/s] (SD)

1535

(793)

1427

(748)

1562

(871)

1325

(734)

Mean FEF50[mL/s] (SD)

4535

(1529)

3807

(1127)

4421

(1641)

3600

(1182)

Mean FEF75[mL/s] (SD)

7876

(2133)

5816

(1479)

7528

(2370)

5536

(1516)

% FEV1/FVC≤0.7

15.9

 

9.3

 

19.8

 

14.1

 
  1. *With information on spirometry and smoking
  2. † Includes participants in SAPALDIA 2 who provided information on smoking but no spirometry IQR = inter-quartile range