TABLE 3—

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

	No Caregiving	1–8 Hours per Week	9–20 Hours per Week
Total CHD
No. of cases	217	62	42
Age-adjusted RR (95% CI)	1.00	1.07 (0.80, 1.42)	1.86 (1.33, 2.59)
Multivariate RR (95% CI)	1.00	1.07 (0.80, 1.43)	1.55 (1.10, 2.18)
Nonfatal CHD
No. of cases	153	45	33
Age-adjusted RR (95% CI)	1.00	1.10 (0.79, 1.53)	2.06 (1.41, 3.01)
Multivariate RR (95% CI)	1.00	1.09 (0.78, 1.53)	1.75 (1.18, 2.58)
Fatal CHDa
No. of cases	64	17	9
Age-adjusted RR (95% CI)	1.00	1.00 (0.59, 1.71)	1.36 (0.68, 2.74)

Note. CI = confidence interval.

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