Finite Population Correction

Asymptotic theory has played a large role in the development of many recent econometric methods. For instance, the central limit theorem states that distribution of the mean drawn from any large samples is approximately normally distributed. Asymptotic theory, however, generally assumes that sampling occurs infinitely and with replacement. In the real world, populations are not…

Hospital Quality

The HCAHPS (Hospital Consumer Assessment of Healthcare Providers and Systems) is a standardized survey instrument and data collection methodology for measuring patients’ perceptions of their hospital experience.  HCAPHS is the first national standard for collecting and reporting hospitals quality data. The survey asks discharged patients 27 questions about their recent hospital stay.  The survey is…

When is more less?

Do more intensive medical services improve patient satisfaction?  Not according to Mittler et al. (2010): Overall, higher intensity use was associated (p<.05) with worse (seven measures) or no better care experiences (two measures).  In higher-intensity markets, Medicare FFS and MA beneficiaries reported more problems getting care quickly and less helpful office staff. However, Medicare FFS…

Does spending improve outcomes?

From a paper by Weinstein and Skinner (NEJM 2010): “Moreover, there is considerable variation in health care expenditures and a weak or even negative association between spending and outcomes, such as mortality at the regional level and quality measures at the state level. This evidence has been interpreted to mean that cutting back on these…

Did pay-for-performance work in the UK?

A paper by Sutton, Elder Guthrie and Watt (2010) describes the UK’s National Health Service’s (NHS) adoption of the Quality and Outcomes Framework (QOF) in April 2004. In general, P4P programs can have positive or negative spillovers.  An example of a positive spillover would be the adoption of EMR to comply with certain P4P initiatives,…