. Author manuscript; available in PMC: 2014 Oct 1.

Published in final edited form as: Cancer Epidemiol Biomarkers Prev. 2013 Jul 29;22(10):10.1158/1055-9965.EPI-13-0251. doi: 10.1158/1055-9965.EPI-13-0251

Table 4.

Polychotomous analyses of lung cancer risk.

Segregating cases by histology
	Cases with adeno histology versus their controls (N=78 case-control sets)	Cases with non-adeno histology versus their controls (N=110 case-control sets)
Detectable	1	1
Non-detectable	3.30 (0.29, 37.41) p=0.34	11.78 (1.47, 94.58) p=0.02
Ln concentration	1.40 (0.89, 2.23) p=0.15	1.48 (1.05, 2.07) p=0.02
Segregating cases by the presence of metastases
	Cases with metastatic disease versus their controls (N=84 case-control sets)	Cases with non-metastatic disease versus their controls (N=104 case-control sets)
Detectable	1	1
Non-detectable	11.03 (0.87, 139.28) p=0.06	3.84 (0.54, 27.34) p=0.18
Ln concentration	1.48 (0.95, 2.30) p=0.09	1.36 (0.98, 1.90) p=0.07

Odds ratios (ORs) and 95% confidence intervals (CI) reported as OR (95% CI), OR for non-detectable status and ln of concentration are mutually adjusted and further adjusted for matching variables.

Ln concentration, log-transformed concentration.