An analysis of invalidity benefit claim durations for new male claimants in 1977/1978 and 1982/1983.

This study analyses the duration of Invalidity Benefit (IVB) claims commencing in 1977/1978 and 1982/1983 using a hazard rate model. The analysis was carried out against a background of a substantial increase in the numbers claiming IVB. The main data base comprises a 1% random sample of all National Insurance records for the period 1975-1984, provided by the DHSS. Estimates are made of factors that influence claim durations. The results suggest that while age and health conditions are important, claim durations are also influenced by more narrowly defined economic considerations.