Table 1 Multivariable Logistic Regression 5-Year Predicted Survival Model, US CFFPR, Originally Published 1993–1997 Cohort*.

From: Evaluation of a five-year predicted survival model for cystic fibrosis in later time periods

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

  1. *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.
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