Table 3.
Results of cognitive tests (T-scores).
| PA | CI | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Attention and working speed | Mean | SEM | Paired t-test | Mean | SEM | Paired t-test | ||||
| Work performance series | ||||||||||
| Numbers worked | Before | 48.96 | ± | 1.73 | Before | 52.89 | ± | 3.03 | ||
| After | 53.35 | ± | 1.72 | p < 0.001 | After | 54.78 | ± | 2.43 | n.s. | |
| Δafter-before | 4.39 | ± | 0.59 | Δafter-before | 1.89 | ± | 1.63 | |||
| Errors | Before | 51.83 | ± | 2.22 | Before | 42.89 | ± | 3.03 | ||
| After | 52.26 | ± | 2.21 | n.s. | After | 50.00 | ± | 1.57 | p < 0.05 | |
| Δafter-before | 0.43 | ± | 1.99 | Δafter-before | 7.11 | ± | 3.00 | |||
| Trail making test | ||||||||||
| Part A | Before | 49.61 | ± | 0.95 | Before | 51.28 | ± | 1.54 | ||
| After | 54.39 | ± | 1.41 | p < 0.001 | After | 54.78 | ± | 2.50 | n.s. | |
| Δafter-before | 4.78 | ± | 1.08 | Δafter-before | 3.47 | ± | 1.79 | |||
| Part B | Before | 52.83 | ± | 1.27 | Before | 50.39 | ± | 2.13 | ||
| After | 58.87 | ± | 1.65 | p < 0.001 | After | 54.83 | ± | 2.31 | p < 0.001 | |
| Δafter-before | 6.04 | ± | 1.27 | Δafter-before | 4.44 | ± | 1.03 | |||
| Executive function | Mean | SEM | Paired t-test | Mean | SEM | Paired t-test | ||||
| STROOP | ||||||||||
| Baseline reading | Before | 52.13 | ± | 1.54 | Before | 51.50 | ± | 2.02 | ||
| After | 57.57 | ± | 1.74 | p < 0.001 | After | 52.50 | ± | 2.11 | n.s. | |
| Δafter-before | 5.43 | ± | 0.93 | Δafter-before | 1.00 | ± | 1.13 | |||
| Baseline naming | Before | 52.00 | ± | 1.79 | Before | 50.28 | ± | 2.34 | ||
| After | 55.57 | ± | 1.91 | p < 0.001 | After | 51.83 | ± | 1.95 | n.s. | |
| Δafter-before | 3.57 | ± | 0.88 | Δafter-before | 1.56 | ± | 1.91 | |||
| Interference reading | Before | 49.96 | ± | 1.51 | Before | 45.50 | ± | 2.96 | ||
| After | 50.48 | ± | 1.80 | n.s. | After | 46.44 | ± | 2.02 | n.s. | |
| Δafter-before | 0.52 | ± | 1.94 | Δafter-before | 0.94 | ± | 2.64 | |||
| Interference naming | Before | 51.48 | ± | 2.06 | Before | 52.89 | ± | 2.67 | ||
| After | 50.22 | ± | 1.80 | n.s. | After | 48.33 | ± | 1.65 | n.s. | |
| Δafter-before | −1.26 | ± | 1.77 | Δafter-before | −4.56 | ± | 2.73 | |||
| Response Inhibition | ||||||||||
| Commission errors | Before | 48.61 | ± | 1.96 | Before | 49.06 | ± | 2.60 | ||
| After | 52.26 | ± | 2.17 | p < 0.05 | After | 51.33 | ± | 2.76 | n.s. | |
| Δafter-before | 3.65 | ± | 1.40 | Δafter-before | 2.28 | ± | 2.16 | |||
| Omission errors | Before | 44.78 | ± | 1.97 | Before | 45.89 | ± | 2.19 | ||
| After | 49.39 | ± | 1.82 | p < 0.05 | After | 48.72 | ± | 2.25 | n.s. | |
| Δafter-before | 4.61 | ± | 1.80 | Δafter-before | 2.83 | ± | 1.96 | |||
| Sensitivity index | Before | 46.74 | ± | 2.25 | Before | 47.78 | ± | 3.01 | ||
| After | 52.13 | ± | 2.20 | p < 0.01 | After | 50.28 | ± | 2.60 | n.s. | |
| Δafter-before | 5.39 | ± | 1.57 | Δafter-before | 2.50 | ± | 2.09 | |||
| Tower of London | ||||||||||
| Before | 55.83 | ± | 2.00 | before | 54.22 | ± | 1.61 | |||
| After | 57.87 | ± | 1.35 | n.s. | after | 55.56 | ± | 2.51 | n.s. | |
| Δafter-before | 2.04 | ± | 1.85 | Δafter-before | 1.33 | ± | 2.59 | |||
| Working memory | Mean | SEM | Paired t-test | Mean | SEM | Paired t-test | ||||
| N-back-verbal | ||||||||||
| Correct answers | Before | 55.65 | ± | 3.94 | Before | 54.61 | ± | 3.95 | ||
| After | 73.22 | ± | 2.76 | p < 0.001 | After | 67.00 | ± | 4.03 | p < 0.01 | |
| Δafter-before | 17.57 | ± | 4.49 | Δafter-before | 12.39 | ± | 3.76 | |||