Table 5.

Summary of exploratory analyses considering synergism of exposure to PBDEs and OC pesticides on all-cause and other-cause mortality

		HR (95%CI)a, all-cause mortality Σ PBDEs above LOD in >90%			HR (95%CI)a, other-cause mortality Σ PBDEs above LOD in >90%
		Less than median	Higher than median	interaction p-value	Less than median	Higher than median	interaction p-value
Trans-nonachlor	Less than median	1.0 (Ref.)	1.08 (0.58, 2.00)	0.09	1.0 (Ref.)	0.47 (0.12, 1.86)	0.24
	Higher than median	1.07 (0.67, 1.70)	1.96 (1.11, 3.43)		0.95 (0.47, 1.94)	1.00 (0.52, 1.93)
p,p’-DDE	Less than median	1.0 (Ref.)	1.10 (0.63, 1.94)	0.08	1.0 (Ref.)	0.37 (0.17, 0.81)	0.01
	Higher than median	0.84 (0.46, 1.54)	1.63 (1.03, 2.59)		0.93 (0.42, 2.08)	1.06 (0.46, 2.42)
Oxychlordane	Less than median	1.0 (Ref.)	0.90 (0.40, 2.04)	0.14	1.0 (Ref.)	0.88 (0.39, 1.97)	0.29
	Higher than median	0.87 (0.50, 1.51)	1.60 (1.00, 2.54)		0.34 (0.05, 2.49)	0.96 (0.54, 1.70)
β-hexachlorocyclohexane	Less than median	1.0 (Ref.)	1.13 (0.61, 2.10)	0.26	1.0 (Ref.)	0.60 (0.17, 2.1)	0.49
	Higher than median	0.78 (0.41, 1.48)	1.43 (0.86, 2.74)		0.78 (0.36, 1.70)	0.76 (0.37, 1.54)

^aAdjusted for age, gender, race/ethnicity, education, and smoking status