Variables | Classification | Mean | Standard Deviation (SD) |
Age | Continuous variable | 40.44 | 6.57 |
Gender | Female = 1 (0%), Male = 2 (100%) | 2 | 0 |
Education | Primary school = 1 (0%), Secondary school = 2 (16.81%), High school = 3 (33.19%), Diploma = 4 (37.5%), Associate = 5 (11.2%), Bachelor or higher = 6 (1.29%). | 3.47 | 0.94 |
Marital status | Single = 1 (8.62%), Married = 2 (91.38%) | 1.91 | 0.28 |
Migrant | Immigrant driver = 1 (53.01%), Indigenous driver = 2 (46.99%) | 1.47 | 0.5 |
Smoking status | Smoker = 1 (33.62%), Non-smoker = 2 (66.38%) | 1.66 | 0.47 |
Hours of sleep per day | 1 - 4 hours = 1 (0%), 4 - 6 hours = 2 (23.71%), 6 - 8 hours = 3 (64.22%), 8 - 10 hours = 4 (12.07%) | 2.88 | 0.59 |
Income | ≤10 million Vietnamese Dong (VND) = 1 (56.46%), 10 - 20 = 2 (35.35%), 20 - 30 = 3 (4.74%), >30 = 4 (3.45%) | 1.55 | 0.74 |
Daily driving hours | 1 - 4 hours = 1 (12.5%), 8 - 10 hours = 2 (65.09%), >10 hours = 3 (22.41%) | 2.10 | 0.58 |
Years of driving | Continuous variable | 7.66 | 4.49 |
Perceived income | Sufficient = 1 (46.12%), Insufficient = 2 (53.88%) | 1.54 | 0.5 |
Annual training | Attending = 1 (87.5%), Not attending = 2 (12.5%) | 1.12 | 0.33 |
Days of rest per month | 1 - 3 days = 1 (69.83%), 4 - 7 days = 2 (29.31%), 8 - 14 days = 3 (0.86%) | 1.31 | 0.48 |
Accident-experience in last 3 years | Occurrence = 1 (29.74%), No occurrence (70.26%) | 1.70 | 0.46 |
Fines and penalties in last 3 years | No = 1 (60.34%), 1 = 2 (25%), 2 = 3 (9.05%), 3 = 4 (3.5%), >3 = 5 (2.16%) | 1.63 | 1.00 |