High loan-to-value (LTV) mortgage are residential mortgage loans with LTV ratio greater or equal to 90\%. Lenders are increasingly engaged in risk-based pricing. If properly quantified, the additional credit risk taken when originating high LTV mortgage can be compensated by higher interest rate...

Longitudinal household data can have considerable advantages over much morewidely used cross-sectional data. The collection of longitudinal data, however, may bedifficult and expensive. One problem that has concerned many analysts is that sampleattrition may make the interpretation of estimates...