What does the Hospital Anxiety and Depression Scale measure? Evidence of a bifactor structure and item bias
Understanding consumer over-indebtedness using counselling sector data: scoping study. Report to the Department for Business, Enterprise and Regulatory Reform
Simplified implementation of the Heckman estimator of the dynamic probit model and a comparison with alternative estimators
A comparison of graphical models and structural equation models for the analysis of longitudinal survey data
A comparison of earnings measures from longitudinal and cross-sectional surveys: evidence from the UK