Table 2.

Cause-specific survival analysis for patients diagnosed with Stage I NSCLC, California, 2004–2011

Variables	Hazard ratio (95% Confidence interval)
Age
<50	Reference
50–64	1.025 (0.652, 1.610)
65+	1.616 (1.046, 2.496)
Sex
Male	1.237 (1.091, 1.041)
Female	Reference
Race
Non-Hispanic White	Reference
Non-Hispanic Black	0.908 (0.695, 1.186)
Hispanic	0.743 (0.580, 0.951)
Asian/Pacific Islander	0.706 (0.0.567, 0.879)
SES
Low SES	1.239 (1.069, 1.436)
Medium SES	1.141 (0.972, 1.340)
High SES	Reference
SEER stage
IA	Reference
IB	1.895 (1.670, 2.150)
CoC accreditation
Yes	Reference
No	1.047 (0.904, 1.213)
Hospital volume
Low (<20)	1.777 (1.474, 2.141)
Medium (20–50)	1.234 (1.058, 1.438)
High (>50)	Reference
Treatment
Lobar resection	0.614 (0.528, 0.713)
Sublobar resection	Reference