A comparison of a multistate inpatient EHR database to the HCUP Nationwide Inpatient Sample
This is a review of DeShazo and Hoffman's article "A comparison of a multistate inpatient EHR database to the HCUP Nationwide Inpatient Sample".
Quality measures and research has primarily been used with claims-based data. With the growing adoption of EHR, there is potential in using the clinical data as an alternative for research.The purpose of the work is to compare an EHR database with a claims-based sample data and see if EHR data can be leveraged and used for research and reporting. 
The methodology used was comparing a large EHR database (Cerner Health Facts) to a population sample (Nationwide Inpatient Sample) []. Differences noted were using t-value. Other things noted were differences in procedures and diagnoses between the two datasets for the year 2010. 
They found many similarities between the two databases. The differences generally occurred in diagnoses and procedures as well as psyche and obstetrics/gynecology services. This could be due to a number of factors such as EHR adoption rates in these areas. 
EHR databases have the potential to be a great alternative to regular claims-based data for health research purposes. However, different analytical techniques will be required. More research needs to be done to further understand its utilization 
Population health is a new big initiative now in the Health IT space and it is interesting to see what areas EHRs lack in comparison to claims-based data. This study was done using data from 2010 so it is interesting to see what possible barriers explained for differences in data. In particular, the rate of EHR adoption especially in highly sensitive departments such as psyche/behavioral could explain the lack of EHR data in those areas.
- Deshazo, J., & Hoffman, M. (2015). A comparison of a multistate inpatient EHR database to the HCUP Nationwide Inpatient Sample. BMC Health Services Research BMC Health Serv Res. Retrieved September 28, 2015, from http://www.biomedcentral.com/1472-6963/15/384