Table 1.

Descriptive statistics, readmission rates, and risk factors of scheduled and unscheduled readmissions

		All (n = 124,967)		Unplanned Readmissions (n=28,649)			Planned Readmissions (n = 4,208)

		n	%	Rate	O.R.^§	C.I.	Rate	O.R.^§	C.I.
Age	50–64	43,049	34.45	20.16			3.37
	65–80	53,523	42.83	23.11	1.01	0.97–1.05	3.86	1.03	0.94–1.13
	80+	28,395	22.72	26.77	1.07^‡	1.02–1.12	2.44	0.71^*	0.63–0.79
Sex	Male	59,066	47.27	22.76			3.91
	Female	65,901	52.73	23.07	0.96^‡	0.94–0.99	2.88	0.75^*	0.70–0.80
Race	White	68,447	54.77	21.94			3.45
	Black	11,415	9.13	26.97	1.17^*	1.11–1.23	3.50	1.11	0.99–1.24
	Hispanic	30,874	24.71	23.85	1.10^*	1.07–1.14	3.09	0.97	0.90–1.05
	Other	14,231	11.39	22.42	1.02	0.97–1.07	3.46	1.07	0.97–1.19
Primary Payer	Medicare	81,637	65.33	25.05	1.39^*	1.33–1.46	3.46	1.15^‡	1.04–1.26
	Medicaid	12,786	10.23	27.03	1.53^*	1.45–1.62	2.82	0.99	0.87–1.13
	Private	24,895	19.92	15.54			3.68
	Uninsured^¶	5,649	4.52	15.47	0.99	0.91–1.08	1.93	0.58^*	0.47–0.71
Resident Location	Rural	8,647	6.92	19.76			3.99
	Urban	116,320	93.08	23.16	1.16^*	1.09–1.22	3.32	0.89	0.79–1.00
Median Income	High	25,499	20.40	21.31			3.60
	Medium	63,653	50.94	22.66	1.03	1.00–1.07	3.23	0.94	0.87–1.02
	Low	35,815	28.66	24.55	1.11^*	1.07–1.16	3.45	1.04	0.94–1.14
Number of Chronic	1	2,036	1.63	10.81			1.67
Conditions	2	22,479	17.99	15.20	1.36^*	1.17–1.57	3.35	1.89^†	1.33–2.68
	3	32,986	26.40	19.00	1.68^*	1.45–1.94	3.28	1.94^†	1.37–2.75
	4	29,553	23.65	24.00	2.07^*	1.79–2.39	3.46	2.21^*	1.56–3.13
	5	20,091	16.08	28.05	2.36^*	2.04–2.74	3.42	2.30^*	1.62–3.27
	6	10,902	8.72	32.33	2.72^*	2.34–3.16	3.74	2.66^*	1.86–3.81
	7+	6,920	5.54	35.97	2.93^*	2.52–3.41	3.22	2.33^*	1.61–3.38
Admission History	Yes	20,290	16.24	38.75	2.17^*	2.10–2.25	3.89	1.55^*	1.43–1.68
	No	104,677	83.76	19.86			3.27
Planned Admission	Yes	22,942	18.36	12.90			5.72
	No	102,025	81.64	25.18	1.72^*	1.64–1.80	2.84	0.58^*	0.53–0.62
Disposition	Home	82,674	66.16	19.94			3.44
	Other	42,293	33.84	28.77	1.28^*	1.24–1.32	3.23	1.03	0.95–1.11

		mean	S.D.	Rate	O.R.^§	C.I.	Rate	O.R.^§	C.I.

Length of Stay		4.959	6.414		1.02^*	1.02–1.02		1.01^†	1.00–1.01

All statistics in the table were drawn from the index hospitalization records.

^§

The reference group is patients with no readmissions within 0–3 months (n=92,110), and 17 dummies for the 18 clinical condition groups in the logistic model were omitted from the table due to space limitations.

^¶

Uninsured includes no-charge, self-pay, and charity or indigent programs.

p < .0001

^†

p < .001

^‡

p < .01