Abstract
The relationship between hospital census variables and pharmacy department workload was studied; intensity, which measures services provided per hospitalized patient per day, was used as the workload indicator. Quarterly data on inpatient pharmacy workload and hospital census were statistically analyzed for 1981 through 1985. Number of patient days, number of admissions, average length of stay (LOS), and pharmacy work units were examined. A work unit was one unit of inpatient pharmacy activity, such as one order for oral medication or one i.v. admixture; clinical services were excluded. Intensity was defined as the number of work units per patient day. Intensity as a function of intensive-care-unit (ICU) patient days was also analyzed. The number of pharmacy work units per quarter more than doubled from 1981 to 1985, while the number of admissions remained relatively constant. The average LOS decreased from 8.4 days in 1981 to 6.3 days in 1985, and the number of patient days decreased 27%. Quarterly workload intensity increased from 1.4 to 4.37 over the five-year period. Statistical analysis showed a strong inverse relationship between intensity and average LOS; LOS accounted for 92% of the variability in intensity. The number of ICU patient days, which increased 21%, had a significant effect on pharmacy workload; 30% of the variation in pharmacy workload was explained by ICU days. Intensity measures are useful in predicting pharmacy department workload.
Published Version
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