Table 2 Cognitive test scores in the supplemented and placebo groups
Participants | Digit span forward scores | Verbal fluency scores | |||||
|---|---|---|---|---|---|---|---|
Baseline Mean (SD) | 12 months Mean (SD) | Supplemented vs. placebo Mean diff. (95% CI) | Baseline Mean (SD) | 12 months Mean (SD) | Supplemented vs. placebo Mean diff. (95% CI) | ||
All participants | Supplemented | 11.0 (2.2) (n 455) | 11.5 (2.3) (n 398) | -0.1 (-0.3, 0.2) | 32.1 (12.0) (n 454) | 33.8 (12.8) (n 397) | 0.8 (-0.3, 2.0) |
Placebo | 11.2 (2.2) (n 450) | 11.7 (2.1) (n 374) | 31.7 (12.8) (n 450) | 33.0 (13.3) (n 372) | |||
Participants aged 75 years or over | Supplemented | 10.8 (2.2) (n 144) | 11.1 (2.3) (n 123) | -0.1 (-0.8, 0.6)1 | 30.0 (12.7) (n 143) | 32.4 (13.0) (n 123) | 2.8 (-0.6, 6.2)1 |
Placebo | 11.0 (2.1) (n 146) | 11.3 (2.2) (n 105) | 29.6 (12.5) (n 146) | 30.0 (13.4) (n 103) | |||
Participants at increased risk of deficiency | Supplemented | 10.8 (2.1) (n 144) | 11.2 (2.4) (n 113) | 0.4 (-0.3, 1.1)1 | 29.2 (12.0) (n 144) | 31.3 (13.1) (n 113) | 2.5 (-1.0, 6.1)1 |
Placebo | 10.8 (2.2) (n 116) | 10.9 (2.0) (n 91) | 30.6 (13.9) (n 116) | 29.2 (13.2) (n 91) | |||