Inclusion Criteria: This measure includes people hospitalized in the civilian non-institutional population who reported the specified condition (Back pain; Pneumonia; Normal birth; and Heart condition). Persons were identified using clinical classification codes.
Exclusion Criteria: Excluded from this measure are people in the military and the institutional population. Also excluded are people who did not report the conditions of interest.
Missing data years: Because of sample size limitations, data are not available for all age groups across all conditions for all years.
This measure is calculated by AHRQ from the MEPS.