TABLE 6.

Summary Variables for “Lifetime” and “Everyday” Perceived Racism and Risk of Uterine Leiomyomata, by Median Score on the Abbreviated Carver Coping Scale

Summary Variable	No. Cases	No. Person-Years	Crude IR	Multivariable IRR (95% CI)*
Below median score on coping scale
“Everyday” racism
<1.6†	160	5867	27.3	1.00
1.6-1.9	350	10,453	33.5	1.18 (0.98-1.42)
2.0-2.5	409	11,156	36.7	1.34 (1.12-1.61)
≥2.6	370	9897	37.4	1.43 (1.18-1.72)
Test for ordinal trend				P < 0.001
“Lifetime” racism
No to all†	386	12,625	30.6	1.00
Yes to 1	457	13,273	34.4	1.10 (0.96-1.26)
Yes to 2	319	8347	38.2	1.19 (1.02-1.38)
Yes to all 3	127	3129	40.6	1.25 (1.02-1.53)
Test for ordinal trend				P = 0.007
Greater than or equal to median score on coping scale
“Everyday” racism
<1.6†	178	5385	33.1	1.00
1.6-1.9	317	9587	33.1	0.99 (0.83-1.19)
2.0-2.5	389	11,313	34.4	1.05 (0.88-1.26)
≥2.6	326	10,122	32.2	1.00 (0.83-1.20)
Test for ordinal trend				P = 0.82
“Lifetime” racism
No to all†	339	11,087	30.6	1.00
Yes to 1	401	12,888	31.1	1.01 (0.88-1.17)
Yes to 2	312	8598	36.3	1.15 (0.99-1.35)
Yes to all 3	158	3833	41.2	1.28 (1.06-1.56)
Test for ordinal trend				P = 0.005

Restricted to 14,371 (65.3%) women who completed coping scale in 2005.

Tests for coping interaction (ordinal racism variable): “everyday” racism (P = 0.006) and “lifetime” racism (P = 0.43).

^*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.