Efficiency Data envelopment analysis 2 Auxiliary random vector 1 Blood 1 Blood pressure 1 Cost accounting 1 Covariance matrix 1 Covariate measurement errors 1 Current efficiency 1 Diastolic blood pressures 1 Distributional difference 1 Efficiency measurement 1 Efficiency measurement model 1 Empirical likelihood 1 Employment 1 Information technology 1 Islamic REITs 1 Labor costs 1 Longitudinal data 1 M-REITs 1 Material cost 1 Measurement errors 1 Non-parametric model 1 Peer groups 1 Primary data 1 Project contracts 1 Project duration 1 Project efficiency 1 Random errors 1 Random vectors 1