Table 4.
Odds ratios for the association of dust (n=110) and low wind (n=157) events with asthma admissions for all ages, children, adults and the elderly, with effect modifications by age, insurance status, and sex indicated with an asterisk (*)
| Odds Ratio (95% Confidence Interval) | |||
|---|---|---|---|
|
| |||
| Main Effects and Interaction Effects | Exposure Prior to Admission for Asthma
|
||
| Laga | Dust - Lag 0 (Same Day) | Low Wind – Lag 3 (3 Days Before) | |
| All ages | L01 | 1.11 (0.96, 1.28) | 1.07 (0.96, 1.21) |
| L03 | 1.13 (0.98, 1.29) | 1.06 (0.94, 1.19) | |
|
|
|||
| Children*b | L01 | 0.96 (0.71, 1.31) | 1.19 (0.92, 1.54) |
| L03 | 0.96 (0.71, 1.31) | 1.19 (0.92, 1.54) | |
| Elderly*b | L01 | 0.81 (0.57, 1.17) | 0.93 (0.66, 1.31) |
| L03 | 0.82 (0.57, 1.18) | 0.93 (0.66, 1.31) | |
|
|
|||
| Medicare*c | L01 | 0.89 (0.63, 1.27) | 0.74 (0.54, 1.02) |
| L03 | 0.90 (0.63, 1.27) | 0.74 (0.54, 1.03) | |
| Medicaid*c | L01 | 0.95 (0.69, 1.32) | 0.92 (0.70, 1.21) |
| L03 | 0.95 (0.69, 1.32) | 0.92 (0.70, 1.21) | |
| Other Public*c | L01 | 0.48 (0.15, 1.59) | 1.25 (0.51, 3.09) |
| L03 | 0.48 (0.15, 1.60) | 1.26 (0.51, 3.11) | |
| None*c | L01 | 1.34 (0.68, 2.66) | 1.03 (0.57, 1.85) |
| L03 | 1.34 (0.68, 2.64) | 1.02 (0.57, 1.84) | |
|
|
|||
| Female*d | L01 | 0.92 (0.70, 1.21) | 0.94 (0.74, 1.19) |
| L03 | 0.92 (0.71, 1.21) | 0.94 (0.74, 1.19) | |
|
| |||
|
Subgroup Analysis
| |||
| Children (age 1–17) | L01 | 1.16 (0.94, 1.43) | 1.19 (1.00, 1.41) |
| L03 | 1.15 (0.94, 1.41) | 1.16 (0.98, 1.37) | |
|
|
|||
| Medicaid c | L01 | 0.87 (0.58, 1.32) | 0.74 (0.52, 1.05) |
| L03 | 0.86 (0.57, 1.32) | 0.74 (0.52, 1.05) | |
| Other Public* c | L01 | 0.76 (0.20, 2.80) | 0.68 (0.21, 2.20) |
| L03 | 0.76 (0.20, 2.80) | 0.68 (0.21, 2.21) | |
| None* c | L01 | 1.02 (0.33, 3.22) | 1.04 (0.41, 2.63) |
| L03 | 1.02 (0.33, 3.22) | 1.04 (0.41, 2.63) | |
|
|
|||
| Female* d | L01 | 1.00 (0.66, 1.52) | 1.01 (0.72, 1.41) |
| L03 | 1.01 (0.66, 1.53) | 1.00 (0.71, 1.41) | |
|
| |||
| Adults (age 18–64) | L01 | 1.16 (0.91, 1.50) | 1.01 (0.82, 1.23) |
| L03 | 1.18 (0.93, 1.50) | 1.01 (0.82, 1.24) | |
|
|
|||
| Medicare* c | L01 | 1.16 (0.59, 2.30) | 0.77 (0.41, 1.46) |
| L03 | 1.16 (0.59, 2.30) | 0.77 (0.41, 1.46) | |
| Medicaid* c | L01 | 1.09 (0.61, 1.95) | 1.20 (0.75, 1.94) |
| L03 | 1.09 (0.61, 1.95) | 1.20 (0.75, 1.94) | |
| None* c | L01 | 1.56 (0.66, 3.69) | 1.11 (0.51, 2.39) |
| L03 | 1.56 (0.66, 3.68) | 1.11 (0.51, 2.39) | |
|
|
|||
| Female* d | L01 | 0.76 (0.43, 1.32) | 0.92 (0.55, 1.51) |
| L03 | 0.76 (0.43, 1.32) | 0.92 (0.55, 1.51) | |
|
| |||
| Elderly (age≥65) | L01 | 0.96 (0.71, 1.30) | 0.94 (0.71, 1.25) |
| L03 | 1.03 (0.77, 1.38) | 0.93 (0.70, 1.24) | |
|
|
|||
| Medicare* c | L01 | 1.28 (0.24, 6.99) | 0.70 (0.21, 2.33) |
| L03 | 1.30 (0.24, 7.08) | 0.73 (0.22, 2.43) | |
|
|
|||
| Female* d | L01 | 0.93 (0.50, 1.73) | 1.19 (0.63, 2.25) |
| L03 | 0.95 (0.51, 1.77) | 1.20 (0.64, 2.26) | |
a
L01 means that PM2.5 and nitrogen dioxide were adjusted for with the average over lags 0–1; L03 means that PM2.5 and nitrogen dioxide were adjusted for with the average over lags 0–3. All models also adjust for apparent temperature (lag 1).
b
The reference category is adults.
c
The reference category is private insurance.
d
The reference category is male.