Table 3 Participant information
| Â | Number of participants Mean (SD) | Age of participants Mean (SD) | Percentage of male participants Mean % (SD) | Average year with condition |
|---|---|---|---|---|
Clinical cohorts (n = number of studies) | ||||
 Overall (n = 37) | 24.0 (2.8) | 75.5 (3.5) | 71.4% (19.3) | 8.3 (3.4) |
 PD (n = 18) | 70.3 (196.5) | 65.5 (7.6) | 61.8% (12.3) | 7.6 (3.0) |
 MS (n = 4) | 36.0 (27.8) | 57.6 (15.8) | 18.0% (15.6) | 9.2 (3.0) |
 CHF (n = 6) | 15.0 (10.9) | 61.3 (3.5) | 56.1% (6.8) | NR |
 COPD (n = 9) | 51.2 (77.0) | 61.2 (10.0) | 63.4% (21.2) | NR |
Healthy volunteers (n = number of studies) | ||||
 Overall (n = 5) | 28.0 (23.5) | 50.4 (21.3) | 49.4% (28.3) | N/A |
 PD (n = 2) | 15.0 (N/A) | 62.2 (5.9) | 45.0% (21.2) | N/A |
 MS (n = 1) | 25.0 (N/A) | 34.9 (N/A) | 72.0 (N/A) | N/A |
 CHF (n = 0) | N/A | N/A | N/A | N/A |
COPD (n = 2) | 36.0 (37.8) | 46.3 (35.0) | 42.5% (46.0) | N/A |