Analyzing Potato Market Participation, Market Surplus, and Market Outlet Choice on Small Farm Household Level in Lemo District, Southern Ethiopia

Table 3

First-stage probit estimation after robust results of the determinants of potato market participation.

Variable	Coefficient	Robust Stand error	Z	Marginal effect
Age of household head	−0.0045	0.0191	−0.23	−0.0003
Education level of the household	0.2795	0.0671	3.08	0.0203
Sex of household head	−1.736	0.8457	−2.65	−0.1262
Member of cooperative	1.075	0.5814	2.43	0.0781
Distance to the nearest market	−0.0251	0.0067	−8.88	−0.0018
Adult equivalent	0.0182	0.0809	0.22	0.0013
Effect of remittances	0.6966	0.4864	2.01	0.0506
Total cropland size	−0.3492	0.4125	−0.81	−0.0254
Own transportation facilities	1.932	0.6873	2.72	0.1405
Oxen owned by a farmer (oxen)	−0.0363	−0.3396	−0.11	−0.0026
Types of seed they used	1.327	0.3852	3.91	0.0965
Frequency of extension contact	0.6419	0.4012	2.26	0.0467
Lagged market price	1.474	0.5466	2.37	0.1071
Amount of credit used	0.0117	0.0002	3.92	0.0008
Constant	−2.791	0.7650	−3.65
Number of observations			202
Wald chi^2 (13)			158.10

Note.∗∗∗, ∗∗, and ∗ show statistically significant level at 1, 5, and 10%, respectively.