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Table 1 Demographics during 2012

From: The impact of standardizing the definition of visits on the consistency of multi-database observational health research

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
  1. SD = Standard deviation.