Table 1.

Demographics during 2012

Statistic	CCAE	Optum
Number of eligible members	28,747,530	7,924,173
Age, Mean (SD)	34.67 (18.35)	34.29 (18.04)
Age Decile, %
00-09	11.21	11.48
10-19	15.53	14.79
20-29	13.57	13.77
30-39	14.33	16.02
40-49	17.68	18.46
50-59	19.44	18.03
60-65	8.24	7.45
Gender, %
Female	51.35	50.27

SD = Standard deviation.