Table 2 Item discrimination (a) and difficulty parameter (b) estimates along with standard errors (±SE) for each item of the GAS-10
GAS-10 Item | a ± SE | b1 ± SE | b2 ± SE | b3 ± SE | ||||
|---|---|---|---|---|---|---|---|---|
Item #4 | 0.941 | ±.09 | 1.538 | ±.14 | 3.271 | ±.30 | 4.448 | ±.43 |
Item #1 | 1.446 | ±.10 | −0.619 | ±.06 | 2.267 | ±.14 | 3.589 | ±.25 |
Item #8 | 1.496 | ±.17 | −0.088 | ±.04 | 1.658 | ±.08 | 2.691 | ±.13 |
Item #7 | 1.527 | ±.16 | −1.246 | ±.06 | 1.092 | ±.12 | 2.290 | ±.24 |
Item #2 | 1.528 | ±.12 | 0.836 | ±.07 | 2.660 | ±.17 | 3.843 | ±.29 |
Item #5 | 1.750 | ±.10 | 0.321 | ±.05 | 1.905 | ±.10 | 2.851 | ±.16 |
Item #10 | 2163 | ±.16 | 0.992 | ±.06 | 2.157 | ±.11 | 2.786 | ±.16 |
Item #3 | 2.193 | ±.10 | 0.869 | ±.08 | 2.309 | ±.07 | 3.439 | ±.13 |
Item #6 | 2.508 | ±.12 | −0.012 | ±.05 | 1.592 | ±.10 | 2.512 | ±.17 |
Item #9 | 2.618 | ±.22 | 1.230 | ±.06 | 2.401 | ±.13 | 3.068 | ±.20 |