---
data_dictionary: leader.dta, RData, sas7bdat, sav, txt

description: >
  This data set shows how long political
  leaders of various countries stayed in
  power and is useful for (among other 
  things) illustrating how to fit
  competing risk models based on the 
  manner in which each leader lost power.
  
source: >
  Paul Allison. Survival Analysis Using 
  SAS. A Practical Guide.
  
  Henry Bienen and Nicolas van de Walle
  (1991). Of Time and Power.

copyright: 
  unknown

format: 
  dta: proprietary (Stata)
  RData: proprietary (R)
  sas7bdat: proprietary (SAS)
  sav: proprietary (SPSS)
  txt: tab-delimited
  
varnames:
  first row of data
  
missing_value_code:
  Not needed

size:
  rows: 472
  columns: 13

vars:
  years:
    label: time in power
    unit: years

  lost:
    label: how the leader lost power
    values: 
      still in power at the end of the study: 0
      constitutional exit: 1
      natural death: 2
      nonconstitutional exit: 3
      
  manner:
    label: how the leader reached power
    value:
      constitutional ascent: 0
      nonconstitutional ascent: 1
      
  start:
    label: year that the leader ascended into power
    
  military:
    label: indicator for previous military experience
    value:
      no: 0
      yes: 1
      
  age:
    label: age of the leader at the time of ascent
    unit: years
    
  conflict:
    label: level of ethnic conflict
    value:
      low: 0
      medium or high: 1
      
  loginc:
    label: natural logarithm of GNP per capita
    unit: dollar equivalent
    
  growth:
    label: average annual rate of per capita GNP growth
    
  pop:
    label: population
    unit: millions
    
  land:
    label: land area
    unit: thousands of square kilometers
    
  literacy:
    label: literacy rate
    unit: percentage
    
  region:
    label: location of leader's country
    value:
      Middle East: 0
      Africa: 1
      Asia: 2
      Latin America: 3
---