The graph shows the Age of USRT study participants.
Pie chart with 8 items.
Item 1. less than 50: 3146 - 3%.
Item 2. 50-54: 24291 - 23%.
Item 3. 55-59: 26770 - 26%.
Item 4. 60-64: 19403 - 19%.
Item 5. 65-69: 12625 - 12%.
Item 6. 70-74: 7674 - 7%.
Item 7. 75-79: 4524 - 4%.
Item 8. 80 or over: 5091 - 5%.
Total number: 103524.