Table 2.
Variance component estimates for basic and expanded models
| Model 1 (equation 1) |
Model 2 (equation 2) |
|||
|---|---|---|---|---|
| Parameter | Estimate (s.e.) | p | Estimate (s.e.) | p |
| σ2CRITERION | 0.109 (0.050) | 0.015 | 0.073 (0.054) | 0.087 |
| σ2SAMPLE | 0.610 (0.131) | <0.001 | 0.041 (0.025) | 0.047 |
| σ2INSTRUMENT | 0.074 (0.107) | .245 | ||
| σ2TIME-FRAME | 0.215 (0.380) | 0.286 | ||
| σ2CLINICAL | 0.386 (0.482) | 0.212 | ||
| σ2GENDER | 0.006 (0.018) | 0.360 | ||
| σ2AGE | 0.000a | – | ||
| σ2GROUP | 0.405 (0.134) | 0.001 | ||
| σ2CRITERION × INSTRUMENT | 0.095 (0.024) | <0.001 | ||
| σ2CRITERION × TIME-FRAME | 0.009 (0.011) | 0.216 | ||
| σ2CRITERION × CLINICAL | 0.020 (0.013) | 0.068 | ||
| σ2CRITERION × GENDER | 0.000 (0.005) | 0.486 | ||
| σ2CRITERION × AGE | 0.070 (0.021) | <0.001 | ||
| σ2ERROR | 0.302 (0.020) | <0.001 | 0.129 (0.010) | <0.001 |
| ICC | ||||
| Estimate (95% CI)b | 0.265 (0.244–0.288) | 0.185 (0.154–0.207) | ||
s.e., Standard error; ICC, intraclass correlation; CI, confidence interval.
a
Variance component could not be estimated.
b
CIs were calculated using 1000 bootstrapped resamples.