Certified PGs

Not Certified PGs

Independent Variables

Coef. (S.E)

z

Coef. (S.E)

z

Extension visits

0.336 (0.102)

3.29***

0.528 (0.155)

3.40***

Traceability breadth

0.020 (0.592)

0.03

−.289 (0.497)

−0.58

Farm assets

5.064 (1.679)

3.02***

1.722 (0.583)

2.96***

Area under beans (acres)

1.213 (0.681)

1.78*

−2.476 (0.759)

−3.26***

Control Variables

Exchange seasons (count)

0.574 (0.129)

4.44***

0.431 (0.143)

3.01***

No. sharing buyer (count)

−0.513 (0.431)

−1.19

−0.648 (0.350)

−1.85*

Price (KE/3kg)

−0.156 (0.047)

−3.30***

−0.119 (0.051)

−2.33**

Export firm dummy_1

−2.514 (1.755)

−1.43

0.776 (1.805)

0.43

No. of buyers

−0.104 (1.308)

−0.08

−2.014 (0.933)

−2.16**

High school dummy_1

−1.260 (0.730)

−1.73*

−0.752 (0.728)

−1.03

Age (yrs)

0.370 (0.268)

1.38

−0.310 (0.320)

−0.97

Age squared (yrs)

−0.005 (0.003)

−1.59

0.004 (0.004)

1.10

Intercept

−9.151 (6.938)

−1.32

10.330 (9.963)

1.04

Wald chi2 (24)

150.05***

Log pseudolikelihood

−63.71

Pseudo R2 = 0.7194