Table 4.

Hospital readmissions and revisit rates analyses.

Outcome variablea,b		Control		Intervention		P value
		N	Value, n (%)	N	Value, n (%)
Hospital readmission
	30 days	2636	106 (4.02)	2048	54 (2.64)	.01 c
	60 days	2636	194 (7.36)	2048	85 (4.15)	<.001
	90 days	2636	261 (9.90)	2048	115 (5.62)	<.05
Emergency department visits
	30 days	2594	134 (5.17)	2081	85 (4.08)	.10
	60 days	2594	183 (7.05)	2081	120 (5.76)	.09
	90 days	2594	206 (7.94)	2081	146 (7.02)	.26
Unplanned, unscheduled outpatient visits
	30 days	2571	24 (0.93)	2064	18 (0.87)	.95
	60 days	2571	81 (3.15)	2064	52 (2.52)	.23
	90 days	2571	129 (5.02)	2064	77 (3.73)	.04
Observation status visits
	30 days	2556	60 (2.35)	2059	26 (1.26)	.01
	60 days	2556	95 (3.72)	2059	36 (1.75)	<.05
	90 days	2556	125 (4.89)	2059	49 (2.38)	<.05

^aHospital readmissions were defined as “any subsequent unplanned inpatient admission to any acute care facility which occurred within 30, 60, and 90 days of discharge following the qualifying total joint operations.”

^bRevisit rates were defined as “any visit to an acute care facility which occurred within 30, 60, and 90 days of discharge following qualifying total joint operations bedsides unplanned inpatient admissions—namely, emergency department visits, unplanned, unscheduled outpatient visits, and observation status visits” [11].

^cThe italicized values are statistically significant at a level of .05.