Table 2 Scalabilities in the Mokken nonparametric analyses
From: An item response theory evaluation of three depression assessment instruments in a clinical sample
Item scalabilities, Hi | ||||||
|---|---|---|---|---|---|---|
Item | scalab. | Item | scalab. | Item | scalab. | scalab*. |
AS-18-D1 | 0.326 | PHQ9:1 | 0.584 | MADRS1 | 0.469 | 0.514 |
AS-18-D2 | 0.590 | PHQ9:2 | 0.603 | MADRS2 | 0.442 | 0.476 |
AS-18-D3 | 0.460 | PHQ9:3 | 0.481 | MADRS3 | 0.419 | 0.449 |
AS-18-D4 | 0.576 | PHQ9:4 | 0.478 | MADRS4 | 0.103 | |
AS-18-D5 | 0.557 | PHQ9:5 | 0.385 | MADRS5 | 0.338 | 0.359 |
AS-18-D6 | 0.491 | PHQ9:6 | 0.588 | MADRS6 | 0.358 | 0.370 |
AS-18-D7 | 0.543 | PHQ9:7 | 0.567 | MADRS7 | 0.281 | 0.349 |
AS-18-D8 | 0.513 | PHQ9:8 | 0.400 | MADRS8 | 0.388 | 0.456 |
AS-18-D9 | 0.582 | PHQ9:9 | 0.468 | MADRS9 | 0.371 | 0.410 |
MADRS10 | 0.257 | 0.332 | ||||
Total H | 0.513 | 0.510 | 0.339 | 0.415 | ||
Boot-strapping C.I. | [0.41, 0.63] | [0.42, 0.61] | [0.25, 0.43] | [0.31, 0.51] | ||
Cronbach´s alpha | 0.89 | 0.88 | 0.81 | 0.84 | ||
no. of obs. | 57 | 59 | 56 | 56 | ||