Determinants of adoption and intensity of improved faba bean cultivars in the central highlands of Ethiopia: a double-hurdle approach

Kassa, Yehuala; Giziew, Almaz; Ayalew, Dereje

doi:10.1186/s43170-021-00045-8

CABI Agriculture and Bioscience

Table 3 Estimates from the Double-hurdle and Tobit models

From: Determinants of adoption and intensity of improved faba bean cultivars in the central highlands of Ethiopia: a double-hurdle approach

Variables	Double hurdle model						Tobit model
	Probit (first hurdle)			Truncated regression (second hurdle)			Tobit model
	Coef	Std. Err	ME^a	Coef	Std. Err	ME^a	Coef	Std. Err	ME^a
Sex	0.2869854	0.4256422	0.0760568	− 0.0329689	0.125927	− 0.0280205	0.1036405	0.1837587	0.0200052
Formal education	− 0.0169693	0.0464973	− 0.0044972	− 0.0250121	0.0225784	− 0.0212579	− 0.0147201	0.0211537	− 0.0028413
Family labor	− 0.2269943**	0.1074657	− 0.060158	0.0507435	0.039978	0.0431272	− 0.0986286**	0.0468295	− 0.0190377
Farming experience	0.0011544	0.0116634	0.0003059	0.001163	0.0039658	0.0009884	0.0008723	0.0049594	0.0001684
Land holding	0.3060457	0.2212624	0.0811082	0.0728543	0.0805276	0.0619194	0.159442*	0.0950534	0.0308341
Plot distance	− 0.0053713	0.065303	− 0.0014235	0.0022143	0.0019495	0.0018819	− 0.0010421	0.0027174	− 0.0002012
Livestock holding	0.078225	0.0728454	0.0207312	0.0879935***	0.0262636	0.0747863	0.0644794**	0.0327101	0.0124461
Awareness on the existing varieties	0.9191776***	0.3389331	0.2436004	− 0.1072093	0.1134118	− 0.0911179	0.343249**	0.1492939	0.0662555
Extension contact	0.0583659***	0.201247	0.0154681	− 0.001078	0.0055429	− 0.0009162	0.0203631**	0.0081295	0.0039306
Access to extension training	− 0.1366513	0.3211808	− 0.0362153	0.1896591	0.1522681	0.1611927	− 0.0241896	0.1378047	− 0.0046692
Field visit	− 0.8949538	0.6967469	− 0.2371806	− 0.3800509	0.2848946	− 0.3230081	− 0.4264866	0.325775	− 0.0823224
Access to market information	− 0.2328211	0.3054916	− 0.0617022	0.2696939**	0.1177635	0.2292148	− 0.1936956	0.1342198	− 0.037388
Membership to local cooperative	− 0.0805316	0.2726361	− 0.0213425	0.1116632	0.0917326	0.0949034	− 0.0049519	0.12057	− 0.0009558
Membership to SPMCs	0.821393	0.5622672	0.2176855	− 0.0652477	0.1902271	− 0.0554545	0.2176841	0.2379834	0.0420184
Distance to FTC	− 0.0011356	0.0054248	− 0.000301	0.0015939	0.0020142	− 0.0013547	− 0.0000376	0.002404
Distance to cooperatives	− 0.0016718	0.0057493	− 0.000443	− 0.0004395	0.0028123	− 0.0003735	− 0.0015406	0.0026186	− 0.0002974
Distance to local market	− 0.0010882	0.0021334	− 0.002884	− 0.0007033	0.0007756	− 0.0005977	− 0.0006117	0.000959	− 0.0001181
Access to credit	− 0.3346575	0.3175017	− 0.0886909	0.1212993	0.1194104	0.1030932	− 0.113494	0.1410871	− 0.0219071
Availability of seed	− 0.010581	0.0206321	− 0.0028042	− 0.1618653	0.1020231	− 0.1375705	− 0.0061212	0.0099096	− 0.0011815
Constant	− 0.5980807	0.8042091		− 0.2450028	0.3641673		− 0.4097504	0.3642489
Sigma				0.1845311	0.0258182		0.4901377	0.0649235
Log-Likelihood	− 68.536573			19.207971			− 69.361309
Likelihood ratio test: Tobit Vs Double-hurdle λ = 40.07***
Obs	168			39			168

^aME denotes the marginal effect of the explanatory variables and is calculated at the sample mean
***, **and *indicates the corresponding coefficients are statistically significant at p < 0.001, p < 0.05, and p < 0.1, respectively

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