Table 2.

Descriptive statistics for age and raw Frailty Index at each wave in ELSA

	N	Mean	SD	Range
Group 1
Frailty Index	3983	.14	0.10	0 – 0.68
Age	3983	68.44	1.10	67.00 – 70.00
Group 2
Frailty Index	3491	0.15	0.10	0 .007 – 0.66
Age	3491	72.4	1.09	71.00 – 74.00
Group 3
Frailty Index	2727	.18	0.11	0.007 – 0.69
Age	2727	76.37	1.09	75.00 – 78.00
Group 4
Frailty Index	2020	0.20	0.12	0.01 – 0.79
Age	2020	79.95	0.76	79.00 – 81.00
Group 5
Frailty Index	1495	0.22	0.12	0.01 – 0.74
Age	1495	82.88	0.76	82.00 – 84.00