Table 3—

Multivariate Cox proportional hazard stepwise analysis

ParametersRR (95% CI)#p-value
Age1.10 (1.06–1.15)<0.0005
PSA3.61 (1.35–9.62)0.010
Male sex3.42 (1.34–8.77)0.010
LF criteria % pred
 RV/TLC1.03 (1.01–1.04)<0.0005
 TLC0.95 (0.93–0.98)<0.0005
KCO0.96 (0.94–0.98)<0.0005
Health-related quality of life questionnaire scores
SGRQ activities1.05 (1.02–1.08)<0.0005
  • RR: relative rate; CI: confidence interval; PSA: Pseudomonas aeruginosa; LF: lung function; % pred: % predicted; RV: residual volume; TLC: total lung capacity; KCO: transfer coefficient for the lung for carbon monoxide; SGRQ: St George’s Respiratory Questionnaire. #: RR >1 describes a positive correlation between the parameter and mortality, whereas RR <1 suggests a negative correlation.