Table 3.
Associations between whether at least one bike light was turned on and trip or personal characteristics, variables retained in adjusted analysis only, each variable on its own (unadjusted) and in multiple logistic regression (adjusted)
| |
At least one bike light turned on |
|
|
|
|---|---|---|---|---|
| Yes/No | (% Yes/% No)* | Unadjusted Odds Ratio (95% Confidence Interval) | Adjusted Odds Ratio (95% Confidence Interval) | |
|
Trip time of day |
|
|
|
|
| Day |
32/503 |
(6/94) |
1 (reference) |
1 (reference) |
| Dawn or dusk |
22/28 |
(44/56) |
12.6 (6.49 – 24.6) |
13.2 (6.42 – 27.2) |
| Night |
81/24 |
(77/23) |
50.2 (30.0 – 90.2) |
71.1 (35.8 – 141) |
|
Trip weather type |
|
|
|
|
| Clear sky |
63/414 |
(13/87) |
1 (reference) |
1 (reference) |
| Cloud cover |
39/93 |
(30/70) |
2.91 (1.83 – 4.61) |
3.43 (1.83 – 6.41) |
| Fog, mist, rain or snow |
25/35 |
(42/58) |
4.85 (2.72 – 8.65) |
3.07 (1.33 – 7.10) |
| Wind |
3/11 |
(21/79) |
2.03 (0.55 – 7.61) |
1.75 (0.30 – 10.4) |
|
Trip day of week |
|
|
|
|
| Weekday |
109/422 |
(21/79) |
1 (reference) |
1 (reference) |
| Weekend |
26/133 |
(16/84) |
0.73 (0.45 – 1.19) |
0.48 (0.24 – 0.97) |
|
Sex |
|
|
|
|
| Male |
92/318 |
(22/78) |
1 (reference) |
1 (reference) |
| Female |
43/237 |
(15/85) |
0.60 (0.40 – 0.91) |
0.56 (0.32 – 0.99) |
|
Helmet worn during trip |
|
|
|
|
| No |
33/179 |
(16/84) |
1 (reference) |
1 (reference) |
| Yes | 102/376 | (21/79) | 1.45 (0.93 – 2.25) | 3.15 (1.61 – 6.16) |
Significant associations in bold.
* Row percent.