TABLE 1.

Ovarian cancer risk factors and health‐related risk factors by number of distress‐related psychosocial factors, Nurses' Health Study (1994) and Nurses' Health Study II (2003), N = 115,694.

		NHS				NHSII
		Number of distress‐related psychosocial factors				Number of distress‐related psychosocial factors
		0	1	2	3–4	0	1	2	3–4
Participants	N	31,432	24,219	7584	1831	19,671	19,305	9858	1794
Age, years	Mean (SD)	61.4 (7.4)	62.4 (7.8)	63.3 (8.2)	64.9 (8.4)	48.3 (4.7)	48.7 (4.6)	49 (4.6)	49.4 (4.6)
Race, White	% (N)	94.9 (29818)	93.5 (22634)	93.2 (7070)	93.7 (1715)	95.8 (18846)	95 (18335)	94.5 (9314)	93.6 (1679)
Family history of breast or ovarian cancer	% (N)	15.1 (4754)	15.5 (3765)	16.2 (1226)	17 (312)	13.3 (2625)	14.1 (2723)	14.6 (1444)	14.4 (258)
Parity, none	% (N)	5.3 (1664)	5.2 (1250)	5.7 (435)	5.4 (99)	15.2 (2994)	19.5 (3773)	21.2 (2092)	29.2 (523)
Tubal ligation, ever	% (N)	21.6 (6774)	20.5 (4954)	20 (1520)	19.4 (355)	19.6 (3861)	21.1 (4067)	20.2 (1992)	21.4 (384)
Oral contraceptive use, never	% (N)	50.1 (15735)	47.5 (11499)	46 (3492)	41.9 (767)	14.7 (2888)	12.8 (2472)	12.8 (1262)	11.2 (201)
Menopause status, postmenopausal	% (N)	83.9 (26385)	85.7 (20754)	87 (6599)	90.9 (1665)	24.4 (4798)	27.1 (5237)	29.7 (2923)	32.6 (584)
Hormone use among postmenopausal women, any	% (N)	41.7 (10998)	38.8 (8044)	35.6 (2347)	31.4 (522)	37.6 (1802)	41.5 (2171)	41.6 (1217)	38.2 (223)
BMI	Mean (SD)	26.1 (4.9)	26.5 (5.2)	26.8 (5.5)	27.1 (5.7)	25.9 (5.6)	26.9 (6.3)	27.8 (6.8)	28.4 (7.4)
Physical activity, <3 metabolic equivalent hours/week	% (N)	14.3 (4489)	17.1 (4151)	21.5 (1633)	28.5 (522)	11.6 (2282)	14.5 (2790)	16.6 (1638)	20.8 (373)
Smoking, current	% (N)	10.0 (3154)	13.1 (3161)	18 (1362)	22.6 (413)	4.9 (971)	7.7 (1492)	10.8 (1062)	17.1 (307)