Table 1 Distribution of cases and controls according to socio-demographic and economic factors
Variables | Head injuries (% or Mean ± sd) | p-value | |
|---|---|---|---|
Yes (n = 242) | No (n = 484) | ||
Sex | Â | Â | 0.042 |
 Female | 6.6 | 11.4 |  |
 Male | 93.4 | 88.6 |  |
Ethnic group  |  |  | 0.102 |
 Bariba | 8.3 | 6.2 |  |
 Dendi | 2.5 | 3.3 |  |
 Fon and related | 64.0 | 70.4 |  |
 Peulh | 7.0 | 2.9 |  |
 Nago and related | 11.6 | 12.2 |  |
 Other ethnicities | 6.6 | 5.0 |  |
Professional situation | Â | Â | 0.334 |
 Unemployed | 1.6 | 3.9 |  |
 In employment | 83.1 | 83.3 |  |
 Training | 15.3 | 12.8 |  |
Employment sector | Â | Â | 0.630 |
 Public or denominational | 12.5 | 11.2 |  |
 Private | 87.5 | 88.8 |  |
Marital status | Â | Â | 0.932 |
 Single | 30.6 | 29.3 |  |
 Married or engaged | 67.3 | 68.4 |  |
 Divorced or widowed | 2.1 | 2.3 |  |
BMI | 23.4 (3.8) | 23.7 (3.5) | 0.308 |
Age | 35.6 (12.7) | 36.7 (12.1) | 0.262 |
Household size | 5.0 (2.6) | 4.9 (2.8) | 0.620 |
Number of children < 18 years | 2.0 (1.7) | 1.9 (1.6) | 0.279 |