TABLE 2.
Incidence rate and adjusted and unadjusted HRs for each group (Study 1).
Variable | Total | Cases | 10,000 PY | Adjusted hazard ratio | Unadjusted hazard ratio |
Total | 263,874 | 6,907 | |||
Asthma | |||||
No | 131,937 | 3,248 | 2.44 | 1 | 1 |
Yes | 131,937 | 3,659 | 2.90 | 1.17 (1.11–1.23) | 1.20 (1.14–1.25) |
Sex | |||||
Female | 121,436 | 1,637 | 1.35 | 1 | 1 |
Male | 142,438 | 5,270 | 3.81 | 2.83 (2.68–2.99) | 2.81 (2.66–2.97) |
Age, years | |||||
11–17 | 51,445 | 901 | 1.79 | 1 | 1 |
6∼10 | 81,785 | 2,476 | 3.07 | 1.79 (1.66–1.94) | 1.72 (1.59–1.86) |
0–5 | 130,644 | 3,530 | 2.75 | 1.70 (1.58–1.84) | 1.54 (1.43–1.66) |
Economic status | |||||
20–80% | 156,397 | 3,926 | 2.55 | 1 | 1 |
<20% | 32,387 | 990 | 3.12 | 1.26 (1.17–1.35) | 1.22 (1.14–1.31) |
>80% | 75,090 | 1,991 | 2.71 | 1.05 (0.99–1.10) | 1.06 (1.01–1.12) |
Region | |||||
Rural | 81,772 | 1,807 | 2.24 | 1 | 1 |
Metro | 182,102 | 5,100 | 2.86 | 1.31 (1.24–1.38) | 1.27 (1.21–1.34) |
Atopic dermatitis | |||||
No | 210,842 | 5,360 | 2.59 | 1 | 1 |
Yes | 53,032 | 1,547 | 2.94 | 1.09 (1.03–1.16) | 1.13 (1.07–1.20) |
Allergic rhinitis | |||||
No | 252,718 | 6,564 | 2.65 | 1 | 1 |
Yes | 11,156 | 343 | 3.12 | 1.15 (1.03–1.29) | 1.18 (1.06–1.31) |
CCI | |||||
0 | 162,665 | 4,165 | 2.61 | 1 | 1 |
1 | 96,498 | 2,559 | 2.69 | 1.06 (1.01–1.12) | 1.03 (0.98–1.08) |
2 | 4,711 | 183 | 4.00 | 1.49 (1.29–1.73) | 1.53 (1.32–1.77) |
10,000 PY, per 10,000 person-years and CCI, Charlson comorbidity index.