Table 3.

Prevalence of and service use for potentially preventable unscheduled readmissions (PPURs)

PQI		n	PPUR rate (per 1,000 unscheduled readmissions§)	Total length of stay for PPURs for each PQI (days)	Average length of stay per PPUR (days)†	Total hospital cost for PPURs for each PQI ($)	Average hospital cost per PPUR ($)‡
		a	b	c	d	e	f
TAPQ01	Diabetes Short-Term Complications	218	7.6	1,002.8	4.6	2,876,880.6	13,196.7
TAPQ05	COPD	412	14.4	2,018.8	4.9	5,406,264.0	13,122.0
TAPQ07	Hypertension	64	2.2	256.0	4.0	653,644.8	10,213.2
TAPQ08	CHF	2,618	91.4	13,613.6	5.2	37,432,425.8	14,298.1
TAPQ10	Dehydration	376	13.1	1,616.8	4.3	3,436,038.4	9,138.4
TAPQ11	Bacterial Pneumonia	947	33.1	5,303.2	5.6	14,432,469.4	15,240.2
TAPQ12	Urinary Tract Infection	704	24.6	3,238.4	4.6	7,445,715.2	10,576.3
TAPQ14	Uncontrolled Diabetes	93	3.2	427.8	4.6	998,475.9	10,736.3
	Total	5,432	189.6	27,477.4		72,681,914.1

^§The number of total unscheduled readmissions in our sample was 28,649.’

^†Average length of stay (LOS) per PPUR (d) was calculated by dividing the sum of total LOS for PPURs for each of the eight PQI conditions listed in the second column (c) by the total number of PPUR cases with the condition (a).

^‡Average hospital cost per PPUR (f) was calculated with the same logic using the average LOS: dividing the total hospital cost for PPURs for a certain PQI condition (e) by the total number of PPUR cases with the condition (a).