Table 1. Demographic summary by study group (total population).
| Patients with MDD (N=20) | Healthy volunteers (N=22) | Total (N=42) | P-value | |
|---|---|---|---|---|
| Age (years) | ||||
| Mean (s.d.) | 63.0 (6.33) | 66.4 (7.30) | 64.8 (6.98) | 0.120a |
| Range | 55–80 | 55–78 | 55–80 | |
| Gender, n (%) | ||||
| Female | 15 (75.0) | 13 (59.1) | 28 (66.7) | 0.275b |
| Male | 5 (25.0) | 9 (40.9) | 14 (33.3) | |
| Race, n (%) | ||||
| Caucasian | 13 (65.0) | 17 (77.3) | 30 (71.4) | — |
| Black | 6 (30.0) | 4 (18.2) | 10 (23.8) | |
| Asian | 1 (5.0) | 0 (0.0) | 1 (2.4) | |
| Other | 0 (0.0) | 1 (4.5) | 1 (2.4) | |
| Weight (kg) | ||||
| Mean (s.d.) | 83.18 (17.908) | 81.02 (14.052) | 82.05 (15.841) | — |
| Range | 61.6–122.9 | 62.5–116.6 | 61.6–122.9 | |
| Height (cm) | ||||
| Mean (s.d.) | 166.7 (9.64) | 168.6 (8.09) | 167.7 (8.81) | — |
| Range | 149–180 | 156–180 | 149–180 | |
Abbreviation: MDD, major depressive disorder.
a
P-value is from a two-sample t-test.
b
P-value is from a X2-test.