Table 3.

Multivariate analysis of factors possibly associated with readmission and unexpected death within 30 days after discharge^a

Factors	Data	Multivariate analysis
		P value	HR (95% CI)
Age, years	≥65	0.980
	< 65
Gender	Male	0.423
	Female
Artificial tube or catheter	At least one	0.880
	None
Wound needing dressing changes	Presence	0.404
	Absence
Charlson Index score	< 2
	2 to 4	0.580
	> 4	0.418
Barthel Index score at discharge	< 60	0.208
	≥60
Primary care physician	Presence	0.710
	Absence
Underlying malignancy	Yes	0.003	2.34 (1.33 to 4.11)
	No
Length of hospital stay	< 14 days	0.188
	≥14 days
Blood leukocyte count, cells/μL	6,000 to 11,000	0.494
	< 6,000 or > 11,000
Postdischarge transitional care	Not received	0.014	2.05 (1.16 to 3.65)
	Received
Postdischarge disease type	Chronic illness	0.172
	Acute illness
Visits to hospitalist-run clinic	Not received	0.041	2.65 (1.04 to 6.73)
	Received
Caregiver at home	Not spouse	0.465
	Spouse

^aHR, hazard ratio; CI, confidence interval.