Table 2. Multivariable models to predict risk of adverse outcomes by type of initial surgery.

	30-day rehospitalization		Wound complication diagnosis within 2 years		Infection diagnosis within 2 years
	OR	95% CI	OR	95% CI	OR	95% CI
Type of surgery
Mastectomy and no reconstruction	1	.	1	.	1	.
Mastectomy + implant	1.116	0.86-1.45	2.10	1.67-2.66	1.84	1.64-2.07
Mastectomy + autologous	1.75	1.39-2.21	5.17	4.24-6.30	1.94	1.73-2.18
Radiation
No	1	.	1	.	1	.
Yes	1.038	0.83-1.30	1.154	0.94-1.42	1.29	1.15-1.44
Chemotherapy
No	1	.	1	.	1	.
Yes	1.186	0.96-1.47	1.16	0.96-1.40	1.082	0.98-1.20
Age
< 40	1	.	1	.	1	.
40-49	0.949	0.65-1.38	1.07	0.76-1.51	1.063	0.89-1.27
50-59	1.016	0.71-1.46	1.34	0.97-1.86	1.158	0.97-1.38
60 and older	1.21	0.79-1.85	1.97	1.35-2.87	1.20	0.97-1.47
Year of mastectomy
1998			1	.	1	.
1999			0.722	0.33-1.59	1.00	0.68-1.49
2000			1.196	0.58-2.45	1.088	0.74-1.60
2001			0.884	0.44-1.79	1.145	0.80-1.64
2002			1.078	0.56-2.08	1.117	0.79-1.58
2003			1.097	0.58-2.09	1.045	0.75-1.47
2004			1.111	0.59-2.09	1.394	1.00-1.94
2005			1.691	0.91-3.14	1.365	0.98-1.90
2006			1.785	0.97-3.28	1.29	0.93-1.79
2007			1.639	0.89-3.00	1.449	1.05-2.00
Bilateral mastectomy
No					1	.
Yes					1.20	1.05-1.37
Region of country
Northeast
North Central
South
West
HMO or PPO with capitation
No
Yes
Goodness of fit (P-value)	0.84		0.61		0.43
Interaction of radiation by type of surgery (P-value)	0.70		0.59		0.14