TABLE 7.
Simple Regression Models assessing the predictive value of baseline working memory performance on on-task learning and transfer of learning to untrained outcomes, for participants in the experimental group (n = 27)
| Baseline Working Memory Performance (T2 Backward Digit Span) | ||||||
|---|---|---|---|---|---|---|
| Beta (95% CI) | Standardized Beta | df | F | R2 | p | |
| Outcomes | ||||||
| On-task learning | ||||||
| Cogmed RM | ||||||
| Index Improvement | 1.89 (0.60 to 3.19) | 0.53 | 1, 24 | 9.14 | 0.276 | 0.006 |
| Transfer to untrained outcomes (ΔT2–T3) | ||||||
| Cognition* | ||||||
| Visual Letter Monitoring | ||||||
| Hits 2s/letter | −0.22 (−0.82 to 0.37) | −0.16 | 1, 24 | 0.60 | 0.025 | 0.45 |
| Hits 1s/letter | −0.28 (−0.95 to 0.38) | −0.18 | 1, 23 | 0.78 | 0.033 | 0.39 |
| Size Comparison Span | ||||||
| Total | 0.11 (−0.93 to 1.16) | 0.05 | 1, 24 | 0.051 | 0.002 | 0.82 |
| Intrusions | −0.37 (−1.03 to 0.30) | −0.23 | 1, 24 | 1.31 | 0.052 | 0.26 |
| Dual task listening and memory | ||||||
| Dual task score | 0.62 (−0.20 to 1.44) | 0.31 | 1, 23 | 2.43 | 0.096 | 0.13 |
| Test of Attention in Listeining | ||||||
| Attend frequency IO | −0.02 (−0.06 to 0.01) | −0.26 | 1, 23 | 1.73 | 0.070 | 0.20 |
| Attend frequency CR | −0.00 (−0.03 to 0.03) | −0.05 | 1,23 | 0.062 | 0.003 | 0.81 |
| Attend location IO | −0.03 (−0.06 to 0.01) | −0.33 | 1, 23 | 2.82 | 0.109 | 0.11 |
| Attend location CR | −0.02 (−0.07 to 0.02) | −0.24 | 1, 23 | 1.38 | 0.057 | 0.25 |
| Test of Everyday Attention | ||||||
| Subtest 6 | −0.09 (−0.01 to 0.20) | 0.36 | 1, 24 | 3.67 | 0.133 | 0.07 |
| Subtest 7 dual task decrement | −0.17 (−0.43 to 0.08) | −0.28 | 1, 24 | 1.98 | 0.076 | 0.17 |
| Speech perception | ||||||
| Phoneme discrimination | ||||||
| Threshold /e/ /a/ | 0.60 (−2.11 to 3.30) | 0.10 | 1, 22 | 0.21 | 0.009 | 0.65 |
| Threshold /d/ /g/ | 1.32 (−1.62 to 4.26) | 0.20 | 1, 22 | 0.87 | 0.038 | 0.36 |
| British English Semantic Sentence Test | ||||||
| High context (%) | 1.13 (−2.79 to 50.6) | 0.13 | 1, 22 | 0.36 | 0.016 | 0.56 |
| Low context (%) | −1.68 (−5.68 to 2.33) | −0.18 | 1, 22 | 0.76 | 0.033 | 0.39 |
| Modified Coordinate Response Measure | ||||||
| Threshold | 0.05 (−0.93 to 1.03) | 0.02 | 1, 24 | 0.01 | 0.000 | 0.92 |
| Self-report | ||||||
| Glasgow Hearing Aid Benefit Profile | ||||||
| Initial disability (%) | −1.49 (−4.06 to 1.09) | −0.24 | 1, 24 | 1.42 | 0.056 | 0.25 |
| Handicap (%) | −1.40 (−4.84 to 2.05) | −0.17 | 1, 24 | 0.70 | 0.028 | 0.41 |
| Hearing Handicap Inventory for the Elderly | ||||||
| Total score | 1.02 (−1.17 to 3.21) | 0.19 | 1, 24 | 0.92 | 0.037 | 0.35 |
Significance levels are unadjusted for multiple comparisons. Given that baseline Backward Digit Span (T2) is used as a model predictor, this outcome is not included as an outcome measure within the model analyses.
*
Statistically significant results.