Table 4.
Adjusted incident rate ratios of the number of transport related incidents and cycling related transport incidents by commuting mode among 230 930 UK Biobank commuters
| Model and commute mode | Mean* (SD) events per 100 persons | Adjusted rate ratio† (95% CI) | P value |
|---|---|---|---|
| Transport related incidents: | |||
| Non-active | 1.2 (11.6) | 1 (ref) | |
| Walk | 0.9 (10.0) | 0.80 (0.66 to 0.97) | 0.03 |
| Cycle | 6.2 (27.3) | 3.42 (3.00 to 3.90) | <0.001 |
| Mixed mode: walk | 0.9 (9.9) | 0.79 (0.68 to 0.93) | 0.003 |
| Mixed mode: cycle | 4.2 (21.9) | 2.62 (2.37 to 2.91) | <0.001 |
| Cycling related transport incidents (internal validation) | |||
| Non-active | 0.3 (6.2) | 1 (ref) | |
| Walk | 0.3 (5.7) | 0.97 (0.70 to 1.37) | 0.88 |
| Cycle | 5.2 (24.6) | 8.04 (6.80 to 9.51) | <0.001 |
| Mixed mode: walk | 0.3 (5.7) | 0.92 (0.69 to 1.22) | 0.56 |
| Mixed mode: cycle | 3.0 (18.4) | 5.52 (4.77 to 6.38) | <0.001 |
Rate ratio for cycling incidents acts as a positive control among cycling commuters.
*
Median for all categories is zero, mean and standard deviation per person multiplied by 100.
†
Adjusted for sex, age, ethnicity, Townsend deprivation index, comorbidities (longstanding illness, diabetes, hypertension, cardiovascular disease, cancer, and depression), body mass index, smoking, alcohol drinker status, and five physical activity levels.