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. Author manuscript; available in PMC: 2015 Oct 12.
Published in final edited form as: Am J Med. 2014 Jan 28;127(5):443–449. doi: 10.1016/j.amjmed.2013.12.023

Table 3.

Final Cox Proportional Hazard Models, Patients Diagnosed in the Community and Treated at a Cancer Center

Model 1: Predictor Variables Including Diagnosis to Surgery Interval Hazard Ratio (95% CI) Model 2: Predictor Variables Including Constituents of the Diagnosis to Surgery Interval Hazard Ratio (95% CI)
Diagnosis to surgery interval (wk) 1.04 (1.00–1.09) Referral interval (wk) 1.05 (1.01–1.09)
Treatment interval (wk) 0.82 (0.62–1.08)
Age at diagnosis (y) 1.02 (1.00–1.05) Age at diagnosis (y) 1.02 (0.99–1.05)
Stage Stage
 1A–2A Reference 1A–2A Reference
 2B 2.17 (1.12–4.21) 2B 2.14 (1.11–4.13)
Tumor size Tumor size
 <2 cm Reference <2 cm Reference
 2–4 cm 3.32 (0.99–11.13) 2–4 cm 3.03 (0.90–10.20)
 >4 cm 3.68 (1.05–12.93) >4 cm 3.67 (1.04–12.95)
 Unknown 4.45 (1.21–16.38) Unknown 4.78 (1.30–17.58)

CI = confidence interval.