Table 1.

Summary of Demographic and Clinical Characteristics in Cases and Referents

Characteristic	Hysterectomy Cases (n=4,931)	Age-Matched Referents (n=4,931)
Age at index date, year
Mean (SD)	42.9 (11.7)	43.6 (12.1)
Median (IQR)	41 (36–47)	41 (36–48)
Range	11–93	11–93
Ovary status at index date, n (%)
One intact	86 (1.7)	86 (1.7)
Both intact, but unilateral salpingo-oophorectomy with hysterectomy	929 (18.8)	0
Both intact	3,916 (79.5)	4,845 (98.3)
Type of hysterectomy, n (%)
Vaginal	3,632 (73.7)
Abdominal	1,263 (25.6)
Other (laparoscopic)	36 (0.7)
Indication for hysterectomy, n (%)
Uterine leiomyomas	1,454 (29.5)
Precancerous condition	1,162 (23.6)
Uterine or vaginal prolapse	903 (18.3)
Menstrual disorders	848 (17.2)
Endometriosis	338 (6.8)
Inflammatory disease of pelvic organs	138 (2.8)
Other	67 (1.4)
Menopausal disorders	21 (0.4)

SD, standard deviation; IQR, interquartile range.