Table 8.
Intra Class Correlations and explained variances (in percentages), calculated on basis of prediction
| Dependent variables | NSCE (n = 83755) |
FIS (n = 64190) |
MWDC (n = 64190) |
|---|---|---|---|
| ICC IP-level | 7.1% | 11.8% | 6.5% |
| ICC Office-level | 1.6% | 0.0% | 0.0% |
| R2 total model | 19.1% | 18.5% | 37.2% |
| Contribution in R2 by client variables* | 10.4% | 6.7% | 30.7% |
NSCE = no sustainable (long-term) functional capacities anymore, or restrictions in working hours up to 30 hours (binominal); FIS = functional incapacity score (scale); MWDC = maximum work disability classes 80%-100% (binominal); ICC = Intra Class Correlation; IP = Insurance Physician; R2 = explained variances. The ICCs for NSCE and MWDC were estimated with logistic regression; that of FIS with Poisson regression.
*calculated as the difference between explained variances and ICCs (IP-level and office level).