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Demographic characteristics of patients with MP and controls.
| Patient group(n = 104) | Control group(n = 76) | |
| Age (median, mean ± SD) yearsRange (min–max) | 55, 54.7 ± 11.5(28–80 years) | 52, 52 ± 11.3(29–75 years) |
| SexFemaleMale | 54 (58.7%)50 (56.8%) | 38 (41.3%)38 (43.2%) |
