Seema Vyas|Lilani Kumaranayake
Constructing socio-economic status indices: how to use principal components analysis
London School of Hygiene & Tropical Medicine
theoretically measures household wealth reflected income consumption expenditure information however collection accurate income consumption data requires extensive resources household surveys given increasingly routine application principal components analysis pca using asset data creating socioeconomic status ses indices review pcabased indices constructed used validity limitations specifically issues related choice variables data preparation problems data clustering addressed interpretation results methods classifying households ses groups also discussed pca validated method describe ses differentiation within population issues related underlying data affect pca considered generating interpreting results