| All Subjects | prHD | HD | |
| Sample size | N=131 | N=73 (56%) | N=58 (44%) |
| Male gender | N=56 (43%) | N=26 (36%) | N=30 (52%) |
| Age | 48.0 (18-73) | 45.0 (18-71) | 51.9 (23-73) |
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