| Variables | Coefficient | P-Value |
| Household size (X1) | 2.1103 | 0.010 |
| Level of education (X2) | 0.5117 | 0.320 |
| Age (X3) | 0.7114 | 0.203 |
| Information received about HIV/AIDS through extension/media (1 = yes) (X4) | 0.5110 | 0.018 |
| Information on HIV/AIDS, prevention and protective measure (X5) | 315.1710 | 0.010 |
| Hired labour (X6) | −61.023 | 0.521 |
| Inputs (X7), | 501.82 | 0.003 |
| Expenses on food (X8) | 0.4112 | 0.001 |
| Opportunity cost of own labour (X9) | 4.1103 | 0.033 |
| Income (X10) | 0.0319 | 0.051 |
| Number of non-farm rural activities (X11) | 0.0291 | 0.000 |
| Market facilities (X12) | 2.1013 | 0.021 |
| Access to extension facilities (X13) | 0.0913 | 0.003 |
| Expenses on health facilities | 0.0182 |
|
| Constant | 1106.18 | 0.001 |
| Partial R-squared of excluded instruments: 0.0294 |
|
|
| Test of excluded instruments: F (10,018) = 66.52; Prob > F = 0.000; Adjusted R2 = 0.1629; N = 650 |
|
|