Table 2 Logit P. juliflora as a source of income model: maximum likelihood result (response variable, Y = 1 if a household uses P. juliflora as a source of income, Y = 0 otherwise)

Age of household head

−0.045

0.023^a

−0.010

Primary school dummy (1 = yes, 0 = no)

−0.002

0.534

−0.001

Polygamy status (1 = yes, 0 = no)

0.657

0.742

0.152

Family size

−0.095

0.104

−0.022

Livestock asset

0.018

0.018

0.004

Change in livestock asset

−0.011

0.006^a

−0.003

Division in which household is located (reference is Worer)

Amibara (1 = yes, 0 = no)

0.541

0.713

0.126

Awash Arba (1 = yes, 0 = no)

0.552

0.671

0.128

Halaideghe (1 = yes, 0 = no)

−1.461

0.865^a

−0.339

Gewane (1 = yes, 0 = no)

1.169

0.666^a

0.271

Sideha-Faghe (1 = yes, 0 = no)

−0.337

0.783

−0.078

Constant

1.481

0.993^a

0.344

Number of observations

142

LR(G)

20.83^a

Log likelihood

−63.36