Attained Age Adjustment Factors

Here is a table that allows the scaling of relative claim dollar totals for attained age bands 0-4, 5-19, 10-14 ... 60-64 (source: Chart 6: Inpatient Facility Costs by Age and Experience Year, "Health Care Costs—From Birth toDeath", Society of Actuaries, Dale H. Yamamoto, 2013).

Age	Factor
0 - 4	5.35
5 - 9	0.47
10 - 14	0.30
15 - 19	0.44
20 - 24	0.45
25 - 29	0.67
30 - 34	0.85
35 - 39	0.82
40 - 44	0.81
45 - 49	1.00
50 - 54	1.36
55 - 59	1.88
60 - 64	2.55

Notes

The Average falls in the 45-49 range.  All the other factors can be thought of as ratios to the cost values in the 45-49 age group.