Table 5.
Odds ratios for the association of dust (n=110) and low wind (n=157) events with acute bronchitis 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 Acute Bronchitis
|
||
| Laga | Dust - Lag1 (1 Day Before) | Low Wind - Lag2 (2 Days Before) | |
| All ages | L01 | 1.23 (0.99, 1.55) | 1.11 (0.94, 1.31) |
| L03 | 1.21 (0.97, 1.52) | 1.09 (0.93, 1.29) | |
|
|
|||
| Children* b | L01 | 1.05 (0.57, 1.91) | 1.49 (0.87, 2.56) |
| L03 | 1.21 (0.65, 2.26) | 1.47 (0.85, 2.52) | |
| Elderly* b | L01 | 0.83 (0.40, 1.74) | 1.22 (0.64, 2.33) |
| L03 | 0.90 (0.42, 1.93) | 1.21 (0.63, 2.31) | |
|
|
|||
| Medicare* c | L01 | 0.69 (0.37, 1.32) | 0.94 (0.58, 1.53) |
| L03 | 0.72 (0.37, 1.38) | 0.94 (0.58, 1.53) | |
| Medicaid* c | L01 | 1.01 (0.61, 1.68) | 1.38 (0.94, 2.02) |
| L03 | 1.12 (0.67, 1.89) | 1.36 (0.93, 1.99) | |
| None* c | L01 | 0.44 (0.11, 1.74) | 0.89 (0.30, 2.68) |
| L03 | 0.45 (0.12, 1.81) | 0.89 (0.30, 2.66) | |
|
|
|||
| Female* d | L01 | 1.45 (0.95, 2.21) | 0.80 (0.58, 1.10) |
| L03 | 1.40 (0.91, 2.15) | 0.80 (0.58, 1.11) | |
|
| |||
|
Subgroup Analysis
| |||
| Children (age 1–17) | L01 | 1.33 (1.01, 1.75) | 1.19 (0.98, 1.44) |
| L03 | 1.34 (1.02, 1.76) | 1.16 (0.95, 1.40) | |
|
|
|||
| Medicaid* c | L01 | 0.92 (0.52, 1.63) | 1.33 (0.88, 2.00) |
| L03 | 0.95 (0.53, 1.71) | 1.32 (0.87, 1.99) | |
| None* c | L01 | 0.34 (0.04, 3.31) | 0.50 (0.10, 2.52) |
| L03 | 0.33 (0.04, 3.16) | 0.52 (0.10, 2.59) | |
|
|
|||
| Female* d | L01 | 1.83 (1.09, 3.08) | 0.68 (0.46, 1.00) |
| L03 | 1.88 (1.11, 3.18) | 0.68 (0.46, 1.00) | |
|
| |||
| Adults (age 18–64) | L01 | 1.20 (0.66, 2.16) | 0.82 (0.49, 1.37) |
| L03 | 1.04 (0.57, 1.88) | 0.85 (0.51, 1.43) | |
|
|
|||
| Medicare* c | L01 | 0.71 (0.16, 3.17) | 0.56 (0.16, 1.99) |
| L03 | 1.05 (0.22, 5.08) | 0.54 (0.15, 1.92) | |
| Medicaid* c | L01 | 1.63 (0.41, 6.42) | 1.31 (0.27, 6.30) |
| L03 | 2.40 (0.56, 10.32) | 1.32 (0.27, 6.36) | |
| None* c | L01 | 0.69 (0.10, 4.93) | 1.99 (0.37, 10.70) |
| L03 | 1.03 (0.14, 7.72) | 1.92 (0.36, 10.30) | |
|
|
|||
| Female* d | L01 | 1.41 (0.41, 4.80) | 1.56 (0.51, 4.74) |
| L03 | 1.20 (0.34, 4.16) | 1.64 (0.54, 5.02) | |
|
| |||
| Elderly (age ≥ 65) | L01 | 0.97 (0.57, 1.66) | 0.99 (0.66, 1.50) |
| L03 | 0.98 (0.58, 1.66) | 0.96 (0.64, 1.45) | |
|
|
|||
| Female* d | L01 | 0.65 (0.22, 1.93) | 1.55 (0.60, 4.00) |
| L03 | 0.62 (0.21, 1.86) | 1.53 (0.59, 3.93) | |
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.