Table 2 Differences between white adults with and without lung function data in the Health Survey for England
1995199619972001
With dataNo dataWith dataNo dataWith dataNo dataWith dataNo data
Total number of white adults12 428269112 96924416829125710 7493797
Male (%)5815 (46.8)1075 (40.0)6038 (46.6)955 (39.1)3208 (47.0)451 (35.9)4985 (46.4)1491 (39.3)
Aged 16–44 (%)6095 (49.0)1242 (46.2)6257 (48.2)1079 (44.2)3323 (48.7)604 (48.1)4870 (45.3)1786 (47.0)
Aged 45–74 (%)5360 (43.1)1076 (40.0)5693 (43.9)958 (39.3)3002 (44.0)479 (38.1)5027 (46.8)1443 (38.0)
Aged 75 and over (%)973 (7.8)373 (13.9)1,019 (7.9)404 (16.6)504 (7.4)174 (13.8)852 (7.9)568 (15.0)
Manual occupation* (%)5786 (48.6)1385 (56.6)5954 (48.1)1226 (50.2)3225 (48.8)642 (53.6)4746 (45.1)1752 (48.1)
Median PM10 (IQR) (μg/m3)19.2 (3.6)19.4 (3.5)20.5 (3.2)20.8 (3.1)19.9 (3.1)20.3 (3.0)15.7 (2.2)16.1 (2.3)
Median NO2 (IQR) (μg/m3)24.2 (16.3)26.0 (15.3)31.0 (14.6)32.2 (15.2)36.4 (14.6)38.4 (13.8)23.3 (10.6)24.5 (11.7)
Median SO2 (IQR) (μg/m3)9.3 (7.5)9.8 (7.5)9.2 (7.6)9.4 (7.6)9.2 (7.2)9.4 (7.6)3.8 (2.7)3.8 (2.9)
Median O3 (IQR) (μg/m3)53.4 (5.0)53.5 (4.2)51.8 (4.3)51.5 (3.8)50.7 (3.8)50.2 (2.6)51.8 (5.9)51.1 (5.8)
  • *Occupation of the head of the household; % is of the number with data on social class.

  • IQR, interquartile range; PM10; particulate matter <10 μm in diameter.