TABLE 4.

“Lifetime” Perceived Racism and Risk of Uterine Leiomyomata

	No. Cases	No. Person-Years	Crude IR	Multivariable IRR (95% CI)*	Multivariable IRR (95% CI)†
Lifetime experiences of racism
Job discrimination
No‡	1440	48,534	29.7	1.00	1.00
Yes	2000	58,594	34.1	1.10 (1.03-1.17)	1.09 (1.02-1.17)
Housing discrimination
No‡	2261	74,071	30.5	1.00	1.00
Yes	1179	33,056	35.7	1.10 (1.03-1.18)	1.13 (1.05-1.21)
Police discrimination
No‡	2547	81,537	31.2	1.00	1.00
Yes	893	25,590	34.9	1.13 (1.05-1.22)	1.14 (1.06-1.23)
Summary variable
No to all incidents above‡	1022	35,030	29.2	1.00	1.00
Yes to 1	1158	37,343	31.0	1.04 (0.96-1.13)	1.04 (0.96-1.13)
Yes to 2	866	24,365	35.5	1.16 (1.06-1.27)	1.17 (1.07-1.28)
Yes to all 3	394	10,389	37.9	1.22 (1.08-1.37)	1.24 (1.10-1.39)
Test for ordinal trend				P < 0.001	P < 0.001

^*Adjusted for age and time period.

^†Adjusted for age, time period, parity, age at menarche, BMI, alcohol, smoking, age at first birth, years since last birth, oral contraceptive use, education, marital status, income, occupation, geographic region, and foreign-born status.

^‡Reference group.

IR indicates incidence rate per 1000 person-years; CI, confidence interval.