Table 1 Baseline characteristics
From: Asthma, social isolation and loneliness, and risk of incident osteoarthritis
Characteristics | Total (n = 448920) | Non-asthma (n = 397211) | Asthma (n = 51709) |
|---|---|---|---|
Age, years, mean (SD) | 56.0 (8.1) | 56.1 (8.1) | 55.3 (8.3) |
Women, n (%) | 240,460 (53.6) | 211,122 (53.2) | 29,338 (56.7) |
Ethnic background, n (%) | |||
Other | 41,907 (9.3) | 37,241 (9.4) | 4666 (9.0) |
White | 404,546 (90.1) | 357,740 (90.1) | 46,806 (90.5) |
Townsend deprivation index, mean (SD) | -1.3 (3.1) | -1.3 (3.1) | -1.1 (3.2) |
Education, years, mean (SD) | 15.1 (5.1) | 15.1 (5.1) | 15.3 (5.0) |
BMI, kg/m, n (%) | |||
< 25 | 153,668 (34.2) | 137,661 (34.7) | 16,007 (31.0) |
25-<30 | 190,449 (42.4) | 169,229 (42.6) | 21,220 (41.0) |
≥ 30 | 102,068 (22.7) | 87,897 (22.1) | 14,171 (27.4) |
Smoking status, n (%) | |||
Never | 247,158 (55.1) | 218,682 (55.1) | 28,476 (55.1) |
Previous | 151,696 (33.8) | 133,837 (33.7) | 17,859 (34.5) |
Current | 47,497 (10.6) | 42,370 (10.7) | 5127 (9.9) |
Alcohol intake, times/week, n (%) | |||
< 3 | 250,818 (55.9) | 220,866 (55.6) | 29,952 (57.9) |
≥ 3 | 196,767 (43.8) | 175,098 (44.1) | 21,669 (41.9) |
Healthy diet score, n (%) | |||
< 3 | 143,795 (32.0) | 127,126 (32.0) | 16,669 (32.2) |
≥ 3 | 285,703 (63.6) | 252,823 (63.7) | 32,880 (63.6) |