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Table 1 Variable definitions and measurement

From: Impacts of Prosopis juliflora invasion on livelihoods of pastoral and agro-pastoral households of Dire Dawa Administration, Ethiopia

Variable Type and definition Measurement
Dependent variable
 TREATMENT Dummy, invasion by Prosopis 1 for invaded households, 0 otherwise
Outcome variables
 EDUEXPE Continuous, education expenditure Birra
 FOaNFEXPE Continuous, food and non-food expenditure Birr
 HEALEXPE Health expenditure Birr
 CALINTAKE Continuous, calorie per day per AE Cal
 AAILS Continuous, average annual income from livestock sale Birr
 AAIMP Continuous, average annual income from milk production Birr
 AAICP Continuous, average annual income from crop production Birr
 AAFW/CP Continuous, average annual income from fuel wood/charcoal production Birr
 OFFFARMIN Continuous, average annual income from off-farm activities Birr
Explanatory variables Hypothesis
 AGEHH Continuous, age of household head Number of years (+)
 EDUHH Dummy, education of household head 1 if illiterate, 0 otherwise (+)
 TOTHH Continuous, family size Number of household members (−)
 TOTALAND Continuous, landholding size Ha (−)
 IRRGTN Dummy for access to irrigation 1 if has access to irrigation, 0 if not (+/−)
 SEXHH Dummy for sex of household head 1 if male, 0 otherwise (+)
 DEPENRATIO Continuous, dependency ratio Ratio (−)
 TLU Continuous, livestock-holding size Tropical livestock units (−)
 CREDITACC Dummy for access to rural credit service 1 if access to credit service, 0 if not (+/−)
 FARMEXPHH Continuous Number of years (−)
 SAFTYNT Dummy for access to safety net programme 1 if a household head is engaged in safety net programme, 0 if not (+)
 DRTEF Dummy for effect of drought 1 if a household’s income from livestock and crop production decreases when compared to the normal year and 0 if it remains the same (+/−)
 DISROAD Continuous, distance from main road Km (−)
  1. Source: own definition
  2. 1USD = 19.25 Ethiopian Birr
  3. aThe unit of currency in Ethiopia