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| |
Ridersa
|
Pillion ridersa
|
Totalb
|
|---|
|
Helmet use
|
77.8
|
36.3
|
57.1
|
|
Standard helmet use
|
50.7
|
21.8
|
36.3
|
|
Full-face helmet use
|
43.9
|
16.8
|
30.3
|
|
Proper helmet use
|
34.9
|
14.0
|
24.5
|
|
Effective helmet use
|
29.2
|
9.8
|
19.5
|
- Use per 100 person-minutes of observation = (Number of users × 100)/D
- D (Denominator) = Number of data collectors × number of days × (number of minutes/day)
- aFor Riders/Pillion riders = ( 1 × 28 × 90) = 2520 person-minutes of observation
- bFor total motorcyclists (riders + pillion) = (2 × 28 × 90) = 5040 person-minutes of observation
- Example for helmet use (riders) = 1961 × 100 /2520=77.8 helmet users per 100 person-minutes of observation
