Table 1.
Participants’ demographic variables.
| Variable | Treatment group n (%) | Control group, n (%) | χ2 | P |
| Category of construction firm | ||||
| Small-scale | 48 (30%) | 32 (20%) | 2.866 | .239 |
| Large-scale | 16 (10%) | 36 (22.5%) | ||
| Multinational | 16 (10%) | 12 (7.5%) | ||
| Gender | ||||
| Male | 64 (40%) | 60 (37.5%) | 0.143 | .705 |
| Female | 16 (10%) | 20 (12.5%) | ||
| Years of experience | ||||
| <10 years | 20 (12.5%) | 24 (15%) | 0.422 | .936 |
| 10–20 years | 28 (17.5%) | 24 (15%) | ||
| 21–30 years | 20 (12.5%) | 16 (10%) | ||
| Above 30 years | 12 (7.5%) | 16 (10%) | ||
| Monthly income | ||||
| ≤50K | 16 (10%) | 28 (17.5%) | 2.096 | .718 |
| 51K–100K | 12 (7.5%) | 12 (7.5%) | ||
| 101K–150K | 16 (10%) | 20 (12.5%) | ||
| 151K–200K | 20 (12.5%) | 12 (7.5%) | ||
| Above 200K | 16 (10%) | 8 (5%) | ||
| Marital status | ||||
| Single | 20 (12.5%) | 32 (20%) | 1.137 | .768 |
| Married | 20 (12.5%) | 16 (10%) | ||
| Divorced | 28 (17.5%) | 20 (12.5%) | ||
| Widowed | 12 (7.5%) | 28 (17.5%) | ||
| Ethnicity | ||||
| Hausa | 32 (20%) | 28 (17.5%) | 0.443 | .801 |
| Igbo | 24 (15%) | 32 (20%) | ||
| Yoruba | 24 (15%) | 20 (12.5%) | ||
χ2 = chi-square, N = number of participants.