. 2007 Feb;42(1 Pt 1):25–44. doi: 10.1111/j.1475-6773.2006.00606.x

Table 2a.

Regional Length of Stay and Probability of Early Discharge to Postacute Care for Patients Undergoing Elective Joint Replacement Surgery

	Length of Stay							Probability of Early Discharge to Postacute Care

Per Annum Change in Mean LOS before SSTP	Step Change Between periods	Per Annum Change in Mean LOS after SSTP	Adjusted Length of Stay by Calendar Month				Per Annum Percentage Point Change before SSTP (%)	Step Change Between Periods (%)	Per Annum Percentage Point Change after SSTP (%)	Adjusted Probability of Utilization by Calendar Month (%)

1/96	9/98	10/98	12/00	1/96	9/98	10/98	12/00
National	−0.30	+0.17	−0.07	5.5	4.7	4.8	4.7	+4.6	−4.6	+1.2	17.0	29.2	24.6	27.1
CMS region
Boston	−0.34^*	+0.11	−0.06	5.3^*	4.4^*	4.5^*	4.4^*	+6.5^*	−2.9^*	+2.0	13.0	30.4	27.4^*	31.8
New York	−0.56^*	+0.09	−0.19^*	7.3^*	5.9^*	5.9^*	5.5^*	+4.1^*	−1.4^*	+3.2	7.2^*	18.1^*	16.8^*	24.0^*
Philadelphia	−0.33^*	+0.25^*	−0.15^*	5.2^*	4.4^*	4.6^*	4.3^*	+5.6	−3.3^*	+4.1^*	17.9^*	32.9^*	29.6^*	38.7^*
Atlanta	−0.34^*	+0.18	−0.07	5.6^*	4.7	4.8	4.7	+5.3	−4.4	+0.7	16.5	30.5^*	26.2^*	27.8^*
Chicago	−0.29	+0.16	−0.04	5.2^*	4.4^*	4.6^*	4.5^*	+4.9	−5.1	+1.1	14.1^*	27.2^*	22.1^*	24.5^*
Dallas	−0.25^*	+0.16	−0.07	5.3^*	4.7	4.8	4.7	+3.9	−4.5	0.0	21.9^*	32.4^*	27.9^*	27.8
Kansas City	−0.27	+0.30^*	−0.03	5.2^*	4.4^*	4.7^*	4.7	+4.3	−10.4^*	+0.1^*	21.3^*	32.7^*	22.3^*	22.6^*
Denver	−0.17^*	+0.18	−0.01^*	4.7^*	4.3^*	4.5^*	4.4^*	+2.8^*	−6.3^*	+0.7	24.7^*	32.3^*	26.0^*	27.7
San Francisco	−0.13^*	+0.18	0.00^*	4.9^*	4.5^*	4.7^*	4.7	+2.9^*	−3.0	+0.4	20.9^*	28.7	25.6^*	26.6
Seattle	−0.18^*	+0.00^*	0.00^*	4.9^*	4.4^*	4.4^*	4.4^*	+2.5^*	0.0^*	+0.2	11.3^*	18.0^*	18.1^*	18.5^*

Regional estimate significantly different than national estimate.

SSTP, Short Stay Transfer Policy; LOS, length of stay; CMS, Centers for Medicare and Medicaid Services.