Table 3.
Correlations, Mean Differences, and Standard Deviations of Actual vs. Linked PROMIS Anxiety T-Scores
| Linking Method / Instrument | Correlation | Mean Difference | SD of Differences |
|---|---|---|---|
| MASQ-GA | |||
| IRT Pattern Scoring | 0.85 | −0.07 | 5.36 |
| IRT Cross-walk Scoring | 0.82 | 0.02 | 5.86 |
| EQP, SM=0.0 | 0.81 | −0.10 | 6.05 |
| EQP, SM=1.0 | 0.80 | 0.03 | 6.19 |
| GAD-7 | |||
| IRT Pattern Scoring | 0.83 | 0.16 | 6.56 |
| IRT Cross-walk Scoring | 0.82 | 0.24 | 6.59 |
| EQP, SM=0.0 | 0.82 | −0.01 | 6.61 |
| EQP, SM=1.0 | 0.83 | −0.55 | 6.48 |
| PANAS | |||
| IRT Pattern Scoring | 0.89 | 0.10 | 5.17 |
| IRT Cross-walk Scoring | 0.89 | 0.26 | 5.26 |
| EQP, SM=0.0 | 0.89 | 0.16 | 5.39 |
| EQP, SM=1.0 | 0.89 | −0.14 | 5.24 |
Note. EQP = Equipercentile; SM = Post-Smoothing.