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D-study estimates for International Trauma Questionnaire versions with 22 and 12 items.
| Number of items = 22 | Number of items = 12 | |
|---|---|---|
| σ2 | .42226 | .41682 |
| σ2 (δ) | .03385 | .06389 |
| σ2 (Δ) | .04450 | .07361 |
| Eρ2 | .92579 | .86709 |
| Φ | .90467 | .84992 |
σ2, universe score variance; σ2 (δ), relative measurement error; σ2 (Δ), total measurement error; Eρ2, generalizability coefficient; Φ, index of dependability.
