. Author manuscript; available in PMC: 2019 Apr 1.

Published in final edited form as: Cancer Epidemiol Biomarkers Prev. 2018 Jan 22;27(4):438–445. doi: 10.1158/1055-9965.EPI-17-0689

Table 3.

Post-diagnostic marine ω-3 PUFA intake in relation to cancer recurrence or death among 510 stage III colon cancer patients by tumor PTGS2 expression status (P_interaction = 0.19)

Tumor PTGS2 expression	Quartile of marine ω-3 PUFAs				P_trend^a

	1	2	3	4
Absent/low
Events/no. at risk	44/97	32/84	29/84	29/82
HR (95% CI)^b	1.00	0.86 (0.53–1.38)	0.83 (0.52–1.35)	0.78 (0.48–1.27)	0.35
High
Events/no. at risk	13/38	24/56	11/35	5/34
HR (95% CI)^b	1.00	1.07 (0.52–2.22)	0.67 (0.27–1.65)	0.32 (0.11–0.95)	0.01

P_trend calculated by modeling the median of each category as a continuous term.

Cox proportional hazards regression model adjusted for age, sex, and energy intake, T-stage, number of positive lymph nodes, baseline performance status, treatment arm, body mass index, physical activity, smoking, and aspirin use.