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. Author manuscript; available in PMC: 2015 Apr 1.
Published in final edited form as: Int J Radiat Oncol Biol Phys. 2014 Apr 1;88(5):1092–1099. doi: 10.1016/j.ijrobp.2013.12.050

Table 4. Logistic Regression Models Any Pulmonary/Upper Respiratory Toxicity Baseline Pulmonary Function Tests.

Any Pulmonary Toxicity Grade 3+ Pulmonary Toxicity
Pulmonary Function Test Events/Total OR (95% CI) p-value Events/Total OR (95% CI) p-value
FVC (Actual) 31 / 51 1.74 (0.71, 4.24) 0.2037 8 / 51 1.21 (0.42, 3.47) 0.7317
FVC (% Predicted) 31 / 51 1.01 (0.99, 1.04) 0.2867 8 / 51 0.99 (0.96, 1.03) 0.7450
FEV1 (Actual) 31 / 51 2.52 (0.87, 7.33) 0.0665 8 / 51 0.85 (0.25, 2.94) 0.7958
FEV1 (% Predicted) 31 / 51 1.01 (0.99, 1.03) 0.1589 8 / 51 0.99 (0.97, 1.02) 0.4973
FEV1/FVC (Actual) 31 / 51 NA - unstable -- 8 / 51 NA - unstable --
FEV1/FVC (% Pred.) 31 / 51 NA - unstable -- 8 / 51 0.34 (0.01, 8.21) 0.5004
RV (Actual) 26 / 39 0.74 (0.38, 1.45) 0.3760 7 / 39 1.09 (0.49, 2.45) 0.8284
RV (% Predicted) 26 / 39 1.00 (0.99, 1.01) 0.7236 7 / 39 0.99 (0.98, 1.01) 0.4692
TLC (Actual) 26 / 39 0.84 (0.51, 1.37) 0.4791 7 / 39 1.10 (0.61, 1.99) 0.7488
TLC (% Predicted) 26 / 39 0.98 (0.94, 1.01) 0.1944 7 / 39 0.97 (0.93, 1.02) 0.2359
DLCO (Actual) 26 / 42 1.03 (0.86, 1.23) 0.7468 8 / 42 0.90 (0.71, 1.13) 0.3504
DLCO (% Predicted) 26 / 42 1.00 (0.98, 1.02) 0.8829 8 / 42 0.97 (0.92, 1.01) 0.0617
PaCO2 22 / 37 1.03 (0.92, 1.14) 0.6364 9 / 37 1.01 (0.90, 1.13) 0.9028
PaO2 22 / 37 1.00 (0.95, 1.05) 0.9705 9 / 37 1.00 (0.95, 1.06) 0.8601
SaO2 20 / 33 1.01 (0.86, 1.19) 0.8765 9 / 33 1.02 (0.85, 1.22) 0.8230

OR = odds ratio