Table 3.

Uterine weight (in grams) by race and selected variables.

	African-American			White
	N	Mean (SD)	p-value	N	Mean (SD)	p-value^a
Age categories
30 – 34	13	301 (210)		9	371 (581)
35 – 39	55	418 (408)	0.4	28	237 (180)	0.2
40 – 44	100	524 (466)	0.2	57	274 (324)	0.3
45 – 47	43	496 (444)	0.2	33	253 (237)	0.3
BMI categories
<25	21	374 (294)		48	236 (286)
25 – <30	49	472 (464)	0.4	37	282 (345)	0.5
30 – <35	56	467 (376)	0.4	27	289 (246)	0.5
≥35	83	510 (494)	0.3	21	239 (237)	1.0
Time since fibroid diagnosis
<1 year	55	458 (515)		49	193 (136)
1-<5years	58	485 (383)	0.7	47	309 (324)	0.07
>=5 years	96	480 (423)	0.8	30	328 (422)	0.05
History of fibroids in mother or sister
Yes	129	447 (397)		41	287 (396)
No	66	478 (439)	0.6	72	250 (237)	0.5
Total pregnancies
None	22	777 (572)		19	505 (601)
1 – 2	72	573 (540)	0.03	53	222 (178)	0.0002
≥3	117	361 (269)	<0.0001	55	228 (190)	0.0002
Time since last full-term pregnancy (among women with full-term pregnancies)
0–3 years	9	542 (580)		10	183 (132)
4–9 years	38	278 (243)	0.03	27	178 (108)	0.9
10+ years	128	459 (373)	0.5	62	237 (204)	0.4
Duration of OC use
Never	16	685 (831)		16	420 (510)
<1 year	19	379 (296)	0.06	20	355 (263)	0.5
1-< 5 years	60	470 (436)	0.06	28	201 (114)	0.02
5-<10 years	39	443 (323)	0.05	22	234 (175)	0.06
>= 10 years	75	478 (397)	0.06	38	204 (307)	0.01
Smoking status
Never	134	469 (393)		71	271 (337)
Former	31	434 (278)	0.7	34	283 (298)	0.9
Current	46	529 (617)	0.4	22	229 (139)	0.6
History of high blood pressure
Yes	89	490 (528)		22	233 (233)
No	121	470 (359)	0.8	105	274 (313)	0.6

p-values from student’s t-test or analysis of variance.