Quintile of intake | Cases/N | Asthma (18 months)N = 33,425/29,1612/28,4213 | P for trend4 | Cases/N | Current asthma (7 years - ISAAC)N = 28,686/25,0242/24,3823 | P for trend4 | Cases/N | Ever admitted asthmaN = 28,766/25,0942/24,4523 | P for trend4 | Cases/N | Ever prescribed asthmaN = 28,757/25,0932/24,4523 | P for trend4 | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
RR (95% CI) | RR (95% CI) | RR (95% CI) | RR (95% CI) | ||||||||||
Continuous | Crude | 5,635/33,425 (17%) | 1.01 (1.00, 1.01) | 0.04 | 1,122/28,686 (4%) | 1.01 (0.99, 1.02) | 0.40 | 1,654/28,766 (6%) | 1.00 (0.99, 1.01) | 0.52 | 8,905/28,757 (31%) | 1.01 (1.01, 1.01) | <0.0001 |
Adjusted2 | 1.00 (1.00, 1.01) | 0.14 | 1.00 (0.99, 1.01) | 0.99 | 1.00 (0.99, 1.01) | 0.52 | 1.01 (1.00, 1.01) | 0.01 | |||||
Adjusted3 | 1.00 (0.99, 1.01) | 0.85 | 0.98 (0.97, 1.00) | 0.10 | 0.99 (0.97, 1.00) | 0.07 | 1.00 (0.99, 1.00) | 0.65 | |||||
1 | Crude | 835/5,071 (16%) | 1.00 (ref.) | 0.06 | 158/4,362 (4%) | 1.00 (ref.) | 0.18 | 251/4,375 (6%) | 1.00 (ref.) | 0.51 | 1,216/4,374 (28%) | 1.00 (ref.) | <0.0001 |
Adjusted2 | 0.38 | 0.84 | 0.36 | 0.005 | |||||||||
Adjusted3 | 0.55 | 0.14 | 0.02 | 0.79 | |||||||||
2 | Crude | 1,675/10,142 (17%) | 1.00 (0.93, 1.08) | 348/8,849 (4%) | 1.09 (0.90, 1.31) | 498/8,873 (6%) | 0.98 (0.84, 1.13) | 2,736/8,872 (31%) | 1.11 (1.05, 1.17) | ||||
Adjusted2 | 1.01 (0.94, 1.10) | 1.07 (0.88, 1.30) | 0.98 (0.84, 1.14) | 1.12 (1.05, 1.19) | |||||||||
Adjusted3 | 1.03 (0.91, 1.17) | 1.05 (0.78, 1.41) | 1.00 (0.78, 1.27) | 1.11 (1.01, 1.22) | |||||||||
3 | Crude | 266/1,761 (15%) | 0.92 (0.81, 1.04) | 49/1,589 (3%) | 0.85 (0.62, 1.17) | 80/1,590 (5%) | 0.88 (0.69, 1.12) | 440/1,589 (28%) | 1.00 (0.91, 1.09) | ||||
Adjusted2 | 0.95 (0.83, 1.08) | 0.78 (0.55, 1.10) | 0.84 (0.64, 1.09) | 1.02 (0.92, 1.12) | |||||||||
Adjusted3 | 0.91 (0.78, 1.05) | 0.62 (0.42, 0.90) | 0.71 (0.53, 0.95) | 0.96 (0.86, 1.07) | |||||||||
4 | Crude | 2,443/14,064 (17%) | 1.05 (0.98, 1.13) | 481/11,828 (4%) | 1.12 (0.94, 1.34) | 705/11,866 (6%) | 1.04 (0.90, 1.19) | 3,842/11,860 (32%) | 1.16 (1.10, 1.23) | ||||
Adjusted2 | 1.02 (0.95, 1.11) | 1.06 (0.88, 1.27) | 0.97 (0.83, 1.12) | 1.12 (1.05, 1.18) | |||||||||
Adjusted3 | 0.99 (0.87, 1.11) | 0.97 (0.73, 1.29) | 0.84 (0.67, 1.07) | 1.05 (0.96, 1.15) | |||||||||
5 | Crude | 417/2,387 (17%) | 1.06 (0.95, 1.18) | 86/2,058 (4%) | 1.15 (0.89, 1.49) | 120/2,062 (6%) | 1.01 (0.82, 1.25) | 671/2,062 (33%) | 1.17 (1.08, 1.27) | ||||
Adjusted2 | 1.05 (0.94, 1.17) | 1.01 (0.77, 1.34) | 0.88 (0.70, 1.11) | 1.11 (1.02, 1.21) | |||||||||
Adjusted3 | 0.99 (0.86, 1.14) | 0.81 (0.57, 1.15) | 0.77 (0.58, 1.03) | 1.03 (0.93, 1.15) |