Age

The age distribution among participants in the Registry and the HTC PP were within a 1-5% difference of each other within each age category. Compared to the 2014 U.S. population, both the Registry and HTC PP participants were much younger.  Fifty-one percent of the Registry participants were less than 20 years of age compared to 27% of the U.S. population. Nineteen percent of the Registry participants were 45 years or older compared to 40% of the U.S. population (Figure 3).

Figure 3: Ages of the Registry participants compared to Community Counts HTC Population Profile and the U.S. Census (2014 estimates)

Bar chart showing ages of the registry participants, see details below.

Figure 3: Age Composition of Community Counts Registry Participants, Community Counts Population Profile, and the  US Population
Age Registry US Census HTC PP
N % N % N %
<2 75 2% 8880674 3% 887 2%
2–10 729 23% 39234020 12% 9564 22%
11–19 805 26% 38535025 12% 13329 31%
20-44 943 30% 108142164 33% 12747 29%
45-64 465 15% 83911085 26% 5009 12%
65+ 128 4% 44849801 14% 1986 5%