Table 2.
Comparative analysis of the study arms
| Characteristic | Head Injury present |
No head Injury | Total(328) n (%) |
Test statistic |
p-value |
|
Mechanism of Injury |
|||||
| Motor-cycle Vs Motor-cycle |
56(82.4) | 12(7.6) | 68(20.7%) | 5.499ǂ | 0.139 |
| Motor-cycle Vs other vehicle |
123 (68) | 58(32) | 181(55.2%) | ||
| Motor-cycle Vs pedestrian |
15(65.2) | 8(4.8) | 23(7.0%) | ||
| Other collisions | 39 (69.6) | 17 (30.4) | 56(17.1%) | ||
|
No of People on the Boda-boda |
|||||
| 1 | 113(77.9) | 32(22.1) | 145(44.2%) | 10.295ǂ | 0.036 |
| 2 | 97 (68.3) | 45 (31.7) | 142(43.3%) | ||
| 3 | 20(54.1) | 17 (45.9) | 37(11.3%) | ||
| 4 | 2(100) | 0 | 2(0.6%) | ||
| 5 | 1(50) | 1 (50.1) | 2(0.6%) | ||
|
Pre hospital transport |
|||||
| Private vehicle | 70(64.2) | 39(35.8) | 109 (33.2) | 30.306ǂ | <0.001 |
| Police vehicle* | 108(81.2) | 25(8.8) | 133(40.5) | ||
| Police ambulance | 4(100) | 0 | 4(1.2) | ||
| Ambulance | 30(85.7) | 5(4.3) | 35(10.7) | ||
| Motorcycle | 21(44.7) | 26(55.3) | 47(14.3) | ||
|
Time from Injury to hospital in minutes |
619.2 (1338.01) 446.3–791.72 |
317.42 (841.43) 146.01–488.83 |
531.66 (1221.66) |
24.637π | <0.001 |
| (Mean, SD [95%CI]) |
398.96–664.36 |
*
These are non-ambulance vehicles for other police duties e.g. highway patrol pickup trucks
ǂ
Chi square test
π
Bartlett's test for homogeneity of variance