Table 1 Sociodemographic characteristics of the sample
Variable | Category | Total sample (n = 97) | (OPC Synergy® + Catalyn®) (n = 31) | (Ginkgo Synergy® + Choline) (n = 33) | Placebo (n = 33) | Statistic |
|---|---|---|---|---|---|---|
Age | - | M = 68.8 (SD = 7.2; R = 58, 93) | M = 68.5 (SD = 6.7; R = 59, 83) | M = 67.6 (SD = 6.3; R = 58, 82) | M = 70.3 (SD = 8.3; R = 60, 93) | F(2,96) = 1.2, p = 0.30 |
Gender | Male | 27 (27.8%) | 7 (22.6%) | 8 (24.2%) | 12 (36.4%) | X 2(2) = 1.3, p = 0.40 |
Female | 70 (72.2%) | 24 (77.4%) | 25 (75.8%) | 21 (63.6%) | ||
Race/ethnicity | White, non-Hispanic | 80 (82.5%) | 27 (87.1%) | 21 (63.6%) | 32 (97.0%) | X 2(4) = 14.2, p < 0.01 |
Black, non-Hispanic | 2 (2.1%) | 1 (3.2%) | 1 (3.0%) | - | ||
Hispanic | 15 (15.5%) | 3 (9.7%) | 11 (33.3%) | 1 (3.0%) | ||
Education | Up to high school | 12 (12.4%) | 5 (16.1%) | 5 (15.2%) | 2 (6.1%) | X 2(6) = 11.4, p = 0.08 |
Some post high school training | 34 (35.1%) | 11 (35.5%) | 12 (36.4%) | 11 (33.3%) | ||
College graduate | 24 (24.7%) | 7 (22.6%) | 12 (36.4) | 5 (15.2%) | ||
Master’s degree or higher | 27 (27.8%) | 8 (25.8%) | 4 (12.1%) | 15 (45.5%) | ||
Marital status | Never married | 8 (8.2%) | - | 2 (6.1%) | 6 (18.2%) | X 2(6) = 9.7, p = 0.14 |
married | 49 (50.5%) | 16 (51.6%) | 15 (45.5%) | 18 (54.5%) | ||
widowed | 19 (19.6%) | 8 (25.8%) | 7 (21.2%) | 4 (12.1%) | ||
Divorced/separated | 21 (21.6%) | 7 (22.6%) | 9 (27.3%) | 5 (15.2%) |