TABLE 2—

Relative Risks (RRs) of Coronary Heart Disease (CHD) Among Women Caring for Children

	No Caregiving	1–8 Hours per Week	9–20 Hours per Week	≥ 21 Hours per Week
Total CHD
No. of cases	262	30	10	19
Age-adjusted RR (95% CI)	1.00	0.90 (0.61, 1.32)	0.91 (0.48, 1.74)	1.77 (1.08, 2.89)
Multivariate RR (95% CI)	1.00	0.83 (0.56, 1.23)	0.78 (0.41, 1.50)	1.58 (0.96, 2.61)
Nonfatal CHD
No. of cases	190	19	8	14
Age-adjusted RR (95% CI)	1.00	0.79 (0.49, 1.28)	1.02 (0.50, 2.11)	1.83 (1.03, 3.25)
Multivariate RR (95% CI)	1.00	0.73 (0.44, 1.18)	0.90 (0.44, 1.86)	1.74 (0.97, 3.12)
Fatal CHDa
No. of cases	72	11	2	5
Age-adjusted RR (95% CI)	1.00	1.15 (0.60, 2.21)	0.63 (0.15, 2.60)	1.57 (0.61, 4.06)

Note. CI = confidence interval.

^aThere were too few cases of fatal CHD to carry out multivariate analyses.