Skip to main content

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