| Independent Variables | Coefficient | S. E. | z |
| Extension visits | 0.019 | 0.037 | 0.53 |
| Traceability breadth | 0.106 | 0.225 | 0.47 |
| Farm assets | 1.593 | 0.461 | 3.45*** |
| Area under beans (acres) | 1.389 | 0.284 | 4.89*** |
| Control Variables |
|
|
|
| Exchange seasons (count) | 0.181 | 0.051 | 3.55*** |
| No. sharing buyer (count) | −0.100 | 0.141 | -0.71 |
| Price (KE/3kg) | −0.040 | 0.018 | −2.17** |
| Export firm dummy | −0.570 | 0.666 | -0.86 |
| No. of buyers | 0.789 | 0.521 | 1.51 |
| High school education dummy | −0.236 | 0.287 | −0.82 |
| Age (yrs) | 0.283 | 0.114 | 2.49** |
| Age squared (yrs) | −0.004 | 0.001 | −2.77*** |
| Intercept | −8.830 | 2.713 | −3.25*** |
| Wald chi2 (12) | 78.72*** |
|
|
| Log pseudolikelihood | −47.50 | Pseudo R2 = 0.6828 | |