TABLE 4.

Risk factor distribution and corresponding univariate HRs for subsequent pelvic floor repair procedures among Olmsted County, MN, women undergoing hysterectomy (hys) with or without PFR, 1965-2002

Risk factora	Categories	nb	Number at risk at 20 years	Cumulative incidence % (95% CI) of PFR at 20 years	Univariate HR (95% CI)
Age (y)	35 or younger	1570	562	3.1 (2.0, 4.2)	1.0 (ref)
	36-45	3424	1238	3.5 (2.7, 4.3)	1.11 (0.76, 1.62)
	46-60	2381	821	2.9 (2.0, 3.9)	1.00 (0.66, 1.51)
	60 or older	845	148	3.6 (1.8, 5.5)	1.27 (0.73, 2.22)
Indication	No prolapse	5009	1522	1.9 (1.4, 2.5)	1.0 (ref)
	Prolapse	3211	1247	5.1 (4.1, 6.0)	2.47 (1.85, 3.29)
Procedure	Vaginal hys only	2169	572	2.9 (1.9, 3.0)	1.14 (0.76, 1.71)
	Abdominal hys only	3167	1004	2.3 (1.6, 3.1)	1.0 (ref)
	Vaginal hys with PFR	2646	1081	4.3 (3.3, 5.2)	1.64 (1.19, 2.28)
	Abdominal hys with PFR	238	112	5.7 (2.2, 9.2)	2.11 (1.11, 4.03)
Time period	1965-1974	2016	1322	4.0 (3.0, 4.9)	1.0 (ref)
	1975-1984	2037	1315	3.0 (2.1, 3.8)	0.79 (0.56, 1.10)
	1985-1994	2204	132	2.4 (1.6, 4.1)	0.74 (0.50, 1.09)
	1995-2002	1963	133	1.3 (0.6, 3.0)c	1.23 (0.66, 2.29)

^aAll risk factors determined at hysterectomy.

^bn = number of subjects in category.

^c10 year estimate.