TABLE 3.
Item response theory parameter estimates for the H-PEPSS-CV.
| Item | Classroom version | Clinical practice version | ||||||||||||
| Slope | Difficulty | Maximum TIF value | Mean TIF∗ value | Slope | Difficulty | Maximum TIF value | Mean TIF∗ value | |||||||
| α (SE) | β1 (SE) | β2 (SE) | β3 (SE) | β4 (SE) | α (SE) | β1 (SE) | β2 (SE) | β3 (SE) | β4 (SE) | |||||
| I5 | 2.32 (0.16) | −2.61 (0.33) | −1.93 (0.17) | −0.58 (0.07) | 1.25 (0.08) | 1.60 | 1.02 | 2.49 (0.18) | −2.79 (0.41) | −2.26 (0.29) | −0.89 (0.09) | 0.86 (0.07) | 1.84 | 1.09 |
| I6 | 2.50 (0.16) | −2.35 (0.26) | −1.59 (0.13) | −0.45 (0.07) | 1.28 (0.08) | 1.82 | 1.12 | 2.32 (0.17) | −2.72 (0.34) | −1.91 (0.20) | −0.66 (0.08) | 1.02 (0.08) | 1.58 | 1.02 |
| I7 | 2.60 (0.16) | −2.62 (0.32) | −1.55 (0.12) | −0.24 (0.06) | 1.36 (0.08) | 1.83 | 1.24 | 2.65 (0.17) | −2.47 (0.30) | −1.88 (0.18) | −0.45 (0.06) | 1.15 (0.07) | 2.08 | 1.20 |
| I8 | 2.60 (0.17) | −2.55 (0.34) | −1.41 (0.11) | −0.08 (0.05) | 1.66 (0.09) | 1.78 | 1.27 | 2.39 (0.16) | −2.46 (0.33) | −1.66 (0.16) | −0.18 (0.06) | 1.47 (0.09) | 1.66 | 1.09 |
| I9 | 2.63 (0.16) | −2.56 (0.28) | −1.53 (0.12) | −0.09 (0.06) | 1.57 (0.09) | 1.87 | 1.28 | 2.55 (0.18) | −2.44 (0.39) | −1.64 (0.15) | −0.33 (0.06) | 1.42 (0.09) | 1.86 | 1.17 |
| I10 | 2.85 (0.19) | −2.58 (0.29) | −1.61 (0.13) | −0.39 (0.06) | 1.43 (0.09) | 2.19 | 1.38 | 3.12 (0.24) | −2.13 (0.31) | −1.63 (0.17) | −0.45 (0.06) | 1.21 (0.07) | 2.89 | 1.44 |
| I11 | 3.47 (0.23) | −2.29 (0.26) | −1.47 (0.10) | −0.43 (0.05) | 1.34 (0.07) | 3.21 | 1.66 | 3.31 (0.24) | −2.42 (0.53) | −1.87 (0.18) | −0.66 (0.06) | 0.97 (0.06) | 3.20 | 1.59 |
| I12 | 3.10 (0.20) | −2.30 (0.25) | −1.50 (0.11) | −0.39 (0.06) | 1.40 (0.08) | 1.79 | 1.46 | 3.34 (0.25) | −2.38 (0.32) | −1.97 (0.23) | −0.67 (0.06) | 0.99 (0.06) | 3.20 | 1.58 |
| I13 | 3.29 (0.19) | −2.28 (0.26) | −1.50 (0.11) | −0.33 (0.05) | 1.26 (0.07) | 2.96 | 1.46 | 3.32 (0.24) | −2.14 (0.33) | −1.70 (0.17) | −0.60 (0.06) | 1.00 (0.06) | 3.25 | 1.54 |
| I14 | 3.42 (0.22) | −2.42 (0.37) | −1.57 (0.12) | −0.36 (0.05) | 1.38 (0.08) | 3.11 | 1.65 | 3.56 (0.28) | −2.29 (0.61) | −1.87 (0.22) | −0.61 (0.06) | 1.09 (0.06) | 3.73 | 1.70 |
| I15 | 3.00 (0.18) | −2.40 (0.33) | −1.54 (0.12) | −0.23 (0.05) | 1.48 (0.08) | 2.45 | 1.46 | 3.46 (0.26) | −2.32 (0.57) | −1.62 (0.14) | −0.38 (0.05) | 1.20 (0.06) | 3.28 | 1.68 |
| I16 | 2.77 (0.16) | −2.21 (0.23) | −1.40 (0.11) | 0.05 (0.05) | 1.68 (0.09) | 2.15 | 1.35 | 2.67 (0.19) | −2.36 (0.29) | −1.51 (0.12) | −0.08 (0.06) | 1.42 (0.09) | 1.99 | 1.27 |
| I17 | 2.66 (0.18) | −2.83 (0.64) | −1.76 (0.15) | −0.54 (0.06) | 1.42 (0.09) | 1.92 | 1.33 | 2.69 (0.20) | −2.67 (0.46) | −1.89 (0.20) | −0.76 (0.08) | 1.02 (0.07) | 2.07 | 1.26 |
| I18 | 2.69 (0.17) | −2.83 (0.63) | −1.65 (0.13) | −0.45 (0.06) | 1.47 (0.09) | 1.94 | 1.31 | 2.95 (0.19) | −2.69 (0.51) | −1.85 (0.20) | −0.64 (0.06) | 1.10 (0.07) | 2.40 | 1.45 |
| I19 | 3.09 (0.19) | −2.28 (0.25) | −1.52 (0.13) | −0.32 (0.05) | 1.47 (0.08) | 2.64 | 1.47 | 3.00 (0.21) | −2.70 (0.37) | −1.96 (0.22) | −0.58 (0.06) | 1.14 (0.07) | 2.53 | 1.48 |
| I20 | 3.04 (0.19) | −2.32 (0.26) | −1.62 (0.12) | −0.39 (0.05) | 1.51 (0.09) | 2.62 | 1.43 | 3.06 (0.21) | −2.68 (0.34) | −1.87 (0.18) | −0.62 (0.07) | 1.22 (0.07) | 2.58 | 1.51 |
IIF, item information function. ∗The mean item information function of seven categories (category: −3, −2, −1, 0, 1, 2, 3).