Table 1.
Descriptive statistics of variables included in the models.
| Variable | Attributes | Count (Proportion) | ||
|---|---|---|---|---|
| Non-Intersections | Intersections | |||
| Injury severity | Fatality | 536 (13.4%) | 158 (12.1%) | |
| Serious injury | 326 (8.1%) | 94 (7.1%) | ||
| Slight injury | 2382 (59.5%) | 857 (65.4%) | ||
| Property damage only * | 761 (19.0%) | 202 (15.4%) | ||
| Age | Under 18 | 172 (4.3%) | 53 (4.0%) | |
| 18 to 60 * | 3536 (88.3%) | 1169 (89.2%) | ||
| Above 60 | 297 (7.4%) | 89 (6.8%) | ||
| Gender | Male | 3826 (95.5%) | 1223 (93.3%) | |
| Female * | 179 (4.5%) | 88 (6.7%) | ||
| Helmet usage | With helmets * | 1129 (28.2%) | 396 (30.2%) | |
| Without helmets | 2876 (71.8%) | 915 (69.8%) | ||
| Passenger | With passenger | 1127 (28.1%) | 416 (31.7%) | |
| Without passenger * | 2878 (71.9%) | 895 (68.3%) | ||
| Duty | Minor | 1587 (39.6%) | 540 (41.2%) | |
| Equal | 645 (16.1%) | 296 (22.6%) | ||
| Major * | 1773 (44.3%) | 475 (36.2%) | ||
| Motorcycle type | Two-wheel motorcycle | 3445 (86.0%) | 1146 (87.4%) | |
| Three-wheel motorcycle * | 560 (14.0%) | 165 (12.6%) | ||
| Collision vehicle | Heavy vehicles | 658 (16.4%) | 190 (14.5%) | |
| Light motor vehicles * | 3347 (83.6%) | 1121 (85.5%) | ||
| Collision type | Moving vehicles | 2649 (79.1%) | 1179 (90.0%) | |
| Others * | 698 (20.9%) | 132 (10.0%) | ||
| Signal | No signal | 2246 (56.1%) | 541 (41.2%) | |
| Marked | 1672 (41.7%) | 647 (49.4%) | ||
| Signal Control * | 87 (2.2%) | 123 (9.4%) | ||
| Road | National and provincial roads | 885 (22.1%) | 635 (48.4%) | |
| classification | County roads * | 3053 (76.2%) | 649 (49.5%) | |
| Others | 67 (1.7%) | 27 (2.1%) | ||
| Road alignment | Straight | 2245 (56.0%) | 955 (72.8%) | |
| Curve * | 1339 (33.5%) | 77 (5.9%) | ||
| Curve and slope | 421 (10.5%) | 279 (21.3%) | ||
| Day of week | Weekday (Monday–Friday) * | 2930 (73.2%) | 978 (74.6%) | |
| Weekend (Saturday and Sunday) | 1075 (26.8%) | 333 (25.4%) | ||
| Time of day | Peak time (7 a.m.–9 a.m., 5 p.m.–8 p.m.) | 1334 (33.3%) | 439 (33.5%) | |
| Non-peak time (9 a.m.–5 p.m., 8 p.m.–6 a.m.) * | 2671 (66.7%) | 872 (66.5%) | ||
| Weather | Rainy/Snowy/Foggy/Windy | 563 (14.0%) | 165 (12.6%) | |
| Sunny * | 3442 (86.0%) | 1146 (87.4%) | ||
| Light | Daylight | 2849 (71.0%) | 987 (75.3%) | |
| Night with light | 661 (16.5%) | 242 (18.5%) | ||
| Darkness * | 495 (12.5%) | 82 (6.2%) | ||
| Non-intersections | Intersections | |||
| GDP (108) | Range | Mean (S.D.) | Range | Mean (S.D.) |
| Min: 0.02; Max: 1.10 | 0.332 (0.284) | Min: 0.02; Max: 1.1 | 0.352 (0.297) | |
Note: * represents the variables treated as the control.