Table 3.
Number of correct answers (mean ± SD) | Intervention group | Control group | p valuea |
---|---|---|---|
Baseline | 8.3 ± 1.3 | 7.9 ± 1.3 | 0.0770 |
6 months (n = 139) | 8.9 ± 1.0 | 8.2 ± 1.2 | 0.0002 |
Difference from baseline, % (95% CI) | 0.6 ± 1.4 (0.3–1.0) | 0.3 ± 1.5 (0.07–0.7) | 0.2074 |
12 months (n = 132) | 8.8 ± 1.2 | 8.0 ± 1.3 | 0.0003 |
Difference from baseline, % (95% CI) | 0.7 ± 1.5 (0.3–1.0) | 0.2 ± 1.5 (− 0.20 to 0.6) | 0.0976 |
aBetween-group comparisons of means: analysis of variance (ANOVA Fisher-Snedecor)