Association between traffic intensity and elderly respiratory hospital admissions* compared with control diagnoses
| Type of control groups | Crude OR (95%CI) | OR adjusted for age, sex (95%CI) | OR adjusted for age, sex, lodging value (95%CI) | OR adjusted for age, sex, DA** household income (95%CI) |
|---|---|---|---|---|
| *Respiratory grouping includes ICD-9 codes 460-519. †Control diagnoses includes ICD-9 001-009, 020-139, 240-389, 520-629, 680-739; trauma, tumours, tuberculosis, and circulatory system diseases were excluded. ‡Traffic intensities correspond to the estimates of peak morning three hour traffic volumes from the MOTREM98 EMME/2 model. §Includes ICD-9 codes 520-579. ¶Includes ICD-9 codes 580-629. **Census dissemination area. | ||||
| All diagnoses† | ||||
| Traffic intensity‡ | ||||
| Off traffic network | 1.00 | 1.00 | 1.00 | 1.00 |
| 1–3160 vehicles/3 hour morning peak | 1.11 (1.04 to 1.19) | 1.09 (1.02 to 1.17) | 1.05 (0.98 to 1.12) | 1.08 (1.00 to 1.15) |
| >3160 vehicles/3 hour morning peak | 1.35 (1.22 to 1.49) | 1.30 (1.17 to 1.44) | 1.18 (1.06 to 1.31) | 1.24 (1.12 to 1.38) |
| Gastrointestinal§ | ||||
| Traffic intensity | ||||
| Off traffic network | 1.00 | 1.00 | 1.00 | 1.00 |
| 1–3160 vehicles/3 hour morning peak | 1.15 (1.06 to 1.26) | 1.10 (1.01 to 1.20) | 1.07 (0.98 to 1.17) | 1.10 (1.00 to 1.20) |
| >3160 vehicles/3 hour morning peak | 1.44 (1.26 to 1.65) | 1.32 (1.15 to 1.52) | 1.21 (1.05 to 1.39) | 1.28 (1.11 to 1.47) |
| Genitourinary¶ | ||||
| Traffic intensity | ||||
| Off traffic network | 1.00 | 1.00 | 1.00 | 1.00 |
| 1–3160 vehicles/3 hour morning peak | 1.20 (1.09 to 1.33) | 1.15 (1.04 to 1.27) | 1.10 (0.99 to 1.22) | 1.13 (1.02 to 1.26) |
| >3160 vehicles/3 hour morning peak | 1.85 (1.56 to 2.19) | 1.67 (1.41 to 1.99) | 1.46 (1.22 to 1.74) | 1.57 (1.32 to 1.87) |