Table 1.
Multivariable Logistic Regression 5-Year Predicted Survival Model, US CFFPR, Originally Published 1993–1997 Cohort*.
| Variables | Parameter Estimates (log odds ratios) | Standard Errors | Odds Ratio (95% Confidence Interval) | P value |
|---|---|---|---|---|
| Intercept | −1.93 | 0.27 | 0.14 (0.08–0.25) | < 0.001 |
| Age (per year) | 0.028 | 0.0060 | 1.03 (1.02–1.04) | < 0.001 |
| Sex (male = 0, female = 1) | 0.23 | 0.10 | 1.26 (1.04–1.53) | 0.018 |
| FEV1% (per %) | −0.038 | 0.0028 | 0.96 (0.96–0.97) | < 0.001 |
| Weight-for-age z Score | −0.40 | 0.053 | 0.67 (0.6–0.74) | < 0.001 |
| Pancreatic sufficiency (0 or 1) | −0.45 | 0.31 | 0.64 (0.35–1.16) | 0.141 |
| Diabetes mellitus (0 or 1) | 0.49 | 0.15 | 1.63 (1.21–2.21) | 0.001 |
| Methicillin sensitive Staphylococcus aureus (0 or 1) | −0.21 | 0.12 | 0.81 (0.64–1.02) | 0.067 |
| Burkholderia cepacia (0 or 1) | 1.82 | 0.30 | 6.20 (3.42–11.23) | < 0.001 |
| Number of prior year acute exacerbations (0–5) | 0.46 | 0.031 | 1.59 (1.5–1.69) | < 0.001 |
| Interaction between prior year acute exacerbations and B. cepacia | −0.40 | 0.12 | 0.67 (0.53–0.84) | 0.001 |
*Reproduced with permission and modified by reversal of sign of parameter estimates to predict deaths rather than survival and addition of 95% confidence intervals with P values30.