Sex |
Male | 1.28 | 1.04 to 1.57 | 0.02 |
Female | – | – | – |
Education |
No schooling | 1.59 | 1.08 to 2.34 | 0.02 |
Primary school education only | 1.66 | 1.27 to 2.17 | 0.00 |
Secondary/high school education only | 1.48 | 1.26 to 1.73 | 0.00 |
Postschool education | – | – | – |
Own their motorcycle |
No | 1.49 | 1.13 to 1.97 | 0.005 |
Yes | – | – | – |
Purpose of motorcycle trip |
Commercial activity | 1.63 | 1.35 to 1.98 | 0.00 |
Riding for pleasure | 1.35 | 1.01 to 1.80 | 0.04 |
Travelling to/from leisure activity | 0.98 | 0.77 to 1.24 | 0.88 |
Travelling to work/school | – | – | – |
Number of individuals on motorcycle |
Two + (driver plus passenger/s) | 1.35 | 1.12 to 1.63 | 0.002 |
One (driver) | – | – | – |
Cost of helmet |
Less than US$5 | 24.89 | 18.93 to 32.72 | 0.00 |
US$5—<$10 | 4.61 | 3.73 to 5.70 | 0.00 |
US$10—<$20 | 1.45 | 1.16 to 1.82 | 0.001 |
US$20 and more | – | – | – |