"We compute quality-adjusted price indexes for Personal Digital Assistants (PDAs) for the period 1999-2004, using data on prices and characteristics of 203 models sold by 12 manufacturers. The PDA market is growing in size, it is technologically dynamic with very substantial changes in measured...

We compute quality-adjusted price indexes for Personal Digital Assistants (PDAs) for the period 1999-2004, using data on prices and characteristics of 203 models sold by 12 manufacturers. The PDA market is growing in size, it is technologically dynamic with very substantial changes in measured...

We estimate hedonic price indexes for clinical trial research, an important component of biomedical R&D, using a large sample of agreements between trial sponsors and clinical investigators obtained from Medidata Solutions Worldwide Inc. Nominal prices measured as total grant cost per patient...

The celebrated economist Zvi Griliches’s entire career can be viewed as an attempt to advance the cause of accuracy in economic measurement. His interest in the causes and consequences of technical progress led to his pathbreaking work on price hedonics, now the principal analytical technique...

We examine the relationship between quality'' and market outcomes for a group of drugs used to treat rheumatoid arthritis. Though this is a widespread and debilitating disease with very substantial impacts on the health of patients and on the economy, currently available drugs have limited...