Table 2 Regression coefficients and odds ratios with 95% confidence intervals as derived from the original model and the internally validated model
From: A predictive tool for an effective use of 18F-FDG PET in assessing activity of sarcoidosis
Original model | Model after internal validation | ||||
|---|---|---|---|---|---|
Variable | Regression coefficient | Odds ratio (95% CI) | p-value | Regression coefficient* | Odds ratio (95% CI) |
Intercept | -0.32 | - | - | -0.23 | - |
Elevated sIL-2R levels | 1.98 | 7.27 (1.86 – 28.40) | 0.004 | 1.85 | 6.33 (1.73-28.17) |
Total HRCT score | 0.24 | 1.27 (1.06 - 1.52) | 0.011 | 0.22 | 1.25 (1.04-1.50) |
To calculate the absolute risk of a positive PET result: P(PET-positive) = (1 / (1 + exp(-(-0.23 + 1.85 * sIL-2R + 0.22 * HRCT score)))) * 100% | |||||