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Table 4 Logistic regression analysis of receiving radiation therapy alone versus chemoradiation in patients that received definitive treatment (OR > 1 means that first factor is associated with higher odds of radiation therapy alone)

From: Identifying patterns of care for elderly patients with non-surgically treated stage III non-small cell lung cancer: an analysis of the national cancer database

Radiation Therapy Alone vs. Chemoradiation Univariate Analysis Multivariate Analysis
Variable OR 95% CI P-value OR 95% CI P-value
Elderly vs. Non-Elderly 3.81 3.30–4.04 < 0.0001 3.30 3.07–3.51 < 0.0001
Female vs. male 1.05 0.99–1.11 0.0840 1.04 0.99–1.10 0.1445
White vs. non-white 0.96 0.89–1.03 0.2684
Academic vs. non-academic 0.91 0.86–0.97 0.0024 1.02 0.96–1.09 0.5296
Private vs. non-private insurance 0.38 0.35–0.41 < 0.0001 0.68 0.63–0.73 < 0.0001
Median income (≥$48,000 vs. <$48,000) 1.18 1.12–1.25 0.0002 1.26 1.19–1.33 < 0.0001
County location (Metropolitan vs. non-metropolitan) 1.07 1.00–1.15 0.0473 1.05 0.97–1.14 0.2267
Clinical stage IIIB vs. stage IIIA 0.73 0.69–0.77 < 0.0001 0.82 0.78–0.87 < 0.0001
Distance to closest facilitya 0.90 0.88–0.92 < 0.0001 0.93 0.91–0.95 < 0.0001
Charlson-Deyo score (1 vs. 0) 1.31 1.24–1.38 < 0.0001 1.22 1.15–1.29 < 0.0001
  1. Abbreviations: CI confidence interval, OR odds ratio; alog(distance) was used for analysis