| All Subjects | prHD | HD | |
| Sample size | N=100 | N=66 (66%) | N=34 (34%) |
| Male gender | N=38 (38%) | N=19 (29%) | N=19 (56%) |
| Age | 46.2 (18-79) | 43.0 (18-70) | 52.2 (35-79) |
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