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. Author manuscript; available in PMC: 2012 Jun 1.
Published in final edited form as: Demography. 2011 May;48(2):401–424. doi: 10.1007/s13524-011-0016-5

Table 1.

Definition of variables

Variable Definition
Outcome Variables
 Migration to three competing
  locations
Whether respondent migrates in month t + 1: migrates within
Chitwan = 1, migrates to other districts = 2, migrates to other
countries=3, or doesn’t migrate at all in month t + 1 = 0.
 Migration to two competing
  locations
Whether respondent migrates in month t + 1: migrates within
Chitwan = 1, migrates to other districts or other countries = 2, or
doesn’t migrate at all in month t + 1.
Proximate Causes
Standardized index of violence Derived through factor analysis using six indicators of violence: number
of bomb blasts, number of casualties from bomb blasts, and number of
casualties from major incidents of violence.a All variables are measured
for Chitwan and the surrounding districts separately.
Root Causes
 Physical capital
  Owns farmland 1 if respondent’s household owns farmland, 0 otherwise.
  Standardized index of
   household amenities
Derived through factor analysis using data on the materials used to build
the floor and roof of the respondent’s house; and whether household
has a toilet, access to own drinking water source, and electricity.
  Standardized index of goods
   owned
Derived through factor analysis using data on durables owned by the
household: a radio, TV, bicycle, motorcycle, cart, tractor, pumpset, and
biogas plant.
  Standardized index of
   livestock owned
Derived through factor analysis using data on number of chicken,
pigeons, bullocks, buffalo, cows, sheep, goats, and pigs owned by the
household.
Human capital
 Education Number of years of schooling completed by the respondent.
 Salary job 1 if respondent holds a salary job, 0 otherwise.
 Age Respondent’s age, monthly event.
 Age squared Respondent’s age squared, monthly event.
Intervening Factors
 Social capital
  House member migrated
   within Chitwan
If any member from the respondent’s household migrated within Chitwan
in 1996, 0 otherwise.
  House member migrated to
   other districts
If any member from the respondent’s household migrated to other
districts in 1996, 0 otherwise.
  House member an
   international migrant
If any member from the respondent’s household migrated to other
countries in 1996, 0 otherwise.
Demographic Variables
 Female 1 if respondent is a female, 0 otherwise.
 Married 1 if respondent was ever married, 0 otherwise, monthly event.
 Number of household
  members
Number of people in the household as of 1996.
 Ethnicity
  Hindu upper caste 1 if Hindu upper caste, 0 otherwise.
  Hindu lower caste 1 if Hindu lower caste, 0 otherwise.
  Hill Tibeto-Burmese 1 if Hill Tibeto-Burmese caste, 0 otherwise.
  Newar and other 1 if Newar or other caste, 0 otherwise.
  Terai Tibeto-Burmese 1 if Terai Tibeto-Burmese caste, 0 otherwise.

Note: All variables except monthly events were measured in 1996

a

Incidents of violence between government and Maoist forces such as major clashes, major attacks by either party, and major landmine explosions resulting in more than two casualties