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Table 5 Logit diversification of livelihood strategies model: maximum likelihood result (response variable, Y = 1 pastoralism and/or others, Y = 0 pastoralism only)

From: The invasion of Prosopis juliflora and Afar pastoral livelihoods in the Middle Awash area of Ethiopia

Explanatory variable

Coefficient

Std. error

Marginal effect

Age of household head

−0.036b

0.025

−0.006

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

1.744b

0.717

0.314

Polygamy status (1 = yes, 0 = no)

−0.202

0,802

−0.036

Family size

0.139

0.133

0.025

Livestock asset

0.025

0.023

0.005

Change in livestock asset

−0.903b

0.034

−0.163

Perceived size of grazing land invasion (1 = above 2/3 is invaded, 0 = 2/3 or less is invaded)

0.987b

0.639

0.178

Division in which household is located (reference is Worer)

   

Amibara

−1.790a

0.854

−0.322

Awash Arba

−0.257

0.889

−0.046

Halaideghe

−2.483a

0.789

−0.447

Gewane

0.132

0.911

0.024

Sideha-Faghe

−1.051

0.838

−0.189

Constant

1.318

1.169

0.204

Number of observations

 

142

 

G

 

36.23a

 

Log likelihood

 

−51.31

 
  1. Marginal effect shows a change in probability in diversifying a household’s livelihood for a unit change in an explanatory variable
  2. aSignificant at 5 %
  3. bSignificant at 1 %