INEI's Returning Population Characterization Survey
INEI 1997 survey determined that 57.6% of the population changed residence due to violence in affected areas.
In 1997, the National Institute of Statistics and Informatics (INEI) conducted the Survey of Characterization of the Returning Population in 437 districts in six departments. The survey found that 57.6% of those interviewed had changed their place of residence due to violence and had returned as a result of the pacification process. Forty-two.4% had not changed their place of residence. 84.9% of the displacement occurred between 1981 and 1990.