TABLE 1

Characteristics of 3250 subjects from the general population

FemalesMalesAll
Subjects1673 (51)1577 (49)3250
Age years53.7±7.054.2±7.054.0±7.0
mMRC breathlessness score
 01226 (73)1349 (86)2575 (79)
 1343 (21)203 (13)546 (17)
 295 (6)22 (1)117 (4)
 3–49 (1)3 (0)12 (0)
FEV1 L2.67±0.463.68±0.663.16±0.76
FEV1 % predicted98.8±13.898.5±14.598.7±14.1
FVC L3.39±0.564.74±0.804.04±0.96
FVC % predicted99.6±12.999.2±13.599.4±13.2
FEV1/FVC0.79±0.060.78±0.060.78±0.06
BMI kg·m−226.3±5.027.2±4.126.7±4.6
 <18.518 (1)5 (0)23 (1)
 18.5–<25770 (46)480 (30)1250 (38)
 25–30554 (33)775 (49)1329 (41)
 >30331 (20)317 (20)648 (20)
Smoking
 Pack-years1.3 (0–19.2)7.0 (0–30.5)3.9 (0–24.3)
 Current smoker283 (17)398 (19)581 (18)
 Never-smoker801 (48)645 (41)1446 (44)
 Occupational exposure569 (34)947 (60)1516 (40)
Exercise h·week­-1
 ≥2688 (41)763 (48)1451 (45)
 0.5–1437 (26)366 (23)803 (25)
 None548 (33)448 (28)996 (31)
Asthma248 (15)171 (11)419 (13)
CAL FEV1/FVC <LLN73 (4)87 (6)160 (5)
Chronic bronchitis148 (9)160 (10)308 (9)
IHD24 (1)45 (3)69 (2)
Severe respiratory infection aged <5years168 (10)146 (9)314 (10)
History of cancer95 (6)82 (5)177 (5)
History of depression301 (18)168 (11)469 (14)
  • Data are presented as n (%), mean±sd or median (interquartile range). Percentages may not sum to 100, due to rounding. mMRC: modified Medical Research Council; FEV1: post-bronchodilatory forced expiratory volume in 1 s; FVC: post-bronchodilatory forced vital capacity; BMI: body mass index; CAL: chronic airflow limitation; LLN: lower limit of normal; IHD: ischaemic heart disease.