Table 4.
Psychometric Properties of THINC-it Among Subjects with BD-D Group
| Concurrent Validity | |||
| THINC-it Test | Criterion Tests | Pearson r | P-value |
| Spotter (n=58) | RTI (n=26) | 0.389 | 0.017** |
| Symbol Check (n=58) | 1-back (n=52) | 0.456 | 0.001** |
| Codebreaker (n=58) | DSST (n=57) | 0.747 | <0.001** |
| Trails (n=58) | TMT-B (n=57) | 0.360 | 0.006** |
| PDQ-5-D (n=58) | PDQ-D (n=58) | 0.812 | <0.001** |
| THINC-it objective composite score (n=51) | Criterion Tests objective composite score (n=58) | 0.695 | <0.001** |
| THINC-it total composite score (n=51) | Criterion Tests total composite score (n=58) | 0.662 | <0.001** |
| Internal Consistency | |||
| Test | n | No. of Items | Cronbach’s α |
| THINC-it PDQ-5-D | 58 | 5 | 0.640 |
| THINC-it total composite score | 58 | 5 | 0.412 |
| THINC-it objective composite score | 58 | 4 | 0.641 |
| Criterion Tests objective composite score | 51 | 4 | 0.521 |
| Criterion Tests total composite score | 51 | 4 | 0.378 |
| PDQ-D | 58 | 20 | 0.939 |
| Intraclass Correlation Coefficient (ICC) | |||
| Variable (n=30) | ICC | 95% CI | P-value |
| PDQ-5-D | 0.683 | 0.430–0.836 | <0.001** |
| Spotter | 0.643 | 0.370–0.813 | <0.001** |
| Symbol Check | 0.737 | 0.515–0.866 | <0.001** |
| Codebreaker | 0.757 | 0.548–0.877 | <0.001** |
| Trails | 0.440 | 0.093–0.689 | 0.008** |
| THINC-it objective composite score | 0.793 | 0.608–0.896 | <0.001** |
| THINC-it total composite score | 0.781 | 0.588–0.890 | <0.001** |
Notes: Spotter: …, not applicable; **P-value is significant at the 0.01 level.
Abbreviations: THINC-it, THINC-integrated tool; PDQ-5-D, Perceived Deficits Questionnaire for Depression-5-item; PDQ-D, Perceived Deficits Questionnaire for Depression; 95% CI, 95% confidence interval; RTI, reaction time paradigm; TMT-B, Trail Making Test-Part B; 1-back, one-back test; ICC, intraclass correlation coefficient; DSST, digit symbol substitution test.