Table 1.

Mean Life Span (MLS) of Siblings Survived to Age 50, by Sex and Studied Group

Group of Siblings	Men		Women
	N	MLS (95% CI)	N	MLS (95% CI)
Siblings of centenarians	4 446	78.69 (78.35–79.02)	3 689	82.75 (82.37–83.14)
Born to short-lived parents	1 434	77.32 (76.73–77.91)	1 157	81.30 (80.59–82.01)
Born to long-lived parents	952	80.50 (79.79–81.22)	780	83.96 (83.13–84.80)
Siblings of male centenarians	2 189	79.37 (78.89–79.84)	1 755	82.67 (82.11–83.23)
Siblings of female centenarians	2 257	78.03 (77.57–78.50)	1 934	82.83 (82.30–83.36)
Siblings of short-lived persons (died at age 65 years)	5 009	73.16 (72.86–73.46)	4 408	77.65 (77.30–78.00)
Born to short-lived parents	2 609	72.26 (71.85–72.68)	2 245	75.98 (75.50–76.48)
Born to long-lived parents	488	76.38 (75.46–77.30)	417	80.31 (79.26–81.37)