Table 1: Baseline characteristics of the subjects by treatment. Continuous variables are reported as mean ± standard deviation, and categorical variables are reported as counts and proportions.
| Variable | NA (n = 16) | Placebo (n = 15) | p value |
| Age (yr) | 79.75 ± 6.88 | 79.00 ± 8.40 | 0.79 |
| Gender | |||
| Male | 9 (56%) | 12 (80%) | |
| Female | 7 (44%) | 3 (20%) | |
| Race or Ethnicity (no.) | |||
| White | 12 (75%) | 13 (87%) | |
| Black or african heritage | 3 (19%) | 0 (0%) | |
| Asian | 0 (0%) | 0 (0%) | |
| Native american | 0 (0%) | 0 (0%) | |
| Pacific islander | 0 (0%) | 0 (0%) | |
| Other | 0 (0%) | 2 (13%) | |
| Unknown | 1 (6%) | 0 (0%) | |
| Education (no.) | |||
| Completion of college or university | 8 (50%) | 8 (53%) | |
| Some college or university | 5 (31%) | 3 (20%) | |
| Completion of secondary school | 3 (19%) | 2 (13%) | |
| Some secondary school | 0 (0%) | 2 (13%) | |
| Weight (lbs) | 159.72 ± 40.44 | 177.71 ± 20.97 | 0.13 |
| Height (cm) | 169.19 ± 11.71 | 170.43 ± 7.26 | 0.73 |
| 22.06 ± 3.17 | 21.27 ± 3.65 | 0.52 | |
| BMI | 27.75 ± 3.69 | 25.79 ± 4.26 | 0.19 |