Methodological Issues when Studying Readmissions and ... - HCUP

APPENDIX B. SUMMARY COUNTS OF REVIEWED JOURNAL ARTICLESType of articleNumber (Percent of total)Articles published between January 2000 and November 2010that used U.S. administrative hospital data to study repeat72 (100%)hospital visitsRegional representation of administrative data*National databases (Medicare claims data, NationalManaged Care Benchmark Database, Perspective Rx21 (29.2%)Comparative Database)State-level databases (HCUP or other state data) 19 (26.4%)Local data on a group of hospitals or a single hospital. 23 (31.9%)Other types of focused data (University Health SystemConsortium data, workers compensation data, Veterans6 (8.3%)Health Administration data)Could not be determined from abstract 3 (4.2%)Type of administrative dataStudies using inpatient data only 50 (69.4%)Studies using outpatient data only 3 (4.2%)Studies using inpatient and outpatient data 12 (16.7%)Could not be determined from abstract 7 (9.7%)Length of study periodLess than 1 year 1 (1.4%)1 year 20 (27.8%)1-2 years 2 (2.8%)2 years 7 (9.7%)3 or more years 34 (47.2%)Could not be determined from abstract 8 (11.1%).HCUP (02/25/11)B-1Method Series on Readmission and Revisit Analyses