. 2017 Feb 16;16:9. doi: 10.1186/s12940-017-0214-8

Table 4.

Association between log-transformed body burden of six PCB congeners, specified PCB functional groups, HCB and DDE, levels and NHL risk stratified by sex

POP by quartile	Males									Females
	Ca/Co	OR	95% CI	P-value	p for trend	OR^(adj)	95% CI	P-value	p for trend	Ca/Co	OR	95% CI	P-value	p for trend	OR^(adj)	95% CI	P-value	p for trend
PCB118	47/34	1				1				31/34	1				1
	35/32	0.6	(0.27,1.32)	0.202		0.69	(0.28,1.72)	0.424		35/34	1.28	(0.59,2.81)	0.534		1.09	(0.46,2.6)	0.846
	22/33	0.32	(0.13,0.78)	0.013*		0.21	(0.07,0.65)	0.007*		23/34	0.89	(0.37,2.12)	0.793		0.69	(0.24,1.96)	0.487
	29/33	0.39	(0.15,0.98)	0.045*	0.021*	0.4	(0.13,1.22)	0.109	0.037	48/34	2.41	(0.94,6.22)	0.068	0.138	2.09	(0.67,6.52)	0.203	0.367
PCB138	42/33	1				1				44/34	1				1
	36/34	0.69	(0.34,1.38)	0.293		0.53	(0.22,1.25)	0.148		24/34	0.58	(0.29,1.13)	0.11		0.38	(0.17,0.87)	0.022
	30/32	0.55	(0.24,1.27)	0.159		0.55	(0.2,1.54)	0.253		24/34	0.55	(0.25,1.19)	0.13		0.4	(0.16,1.02)	0.056
	25/33	0.41	(0.17,1.03)	0.057	0.052	0.25	(0.08,0.81)	0.021*	0.033*	45/34	1.19	(0.54,2.63)	0.67	0.848	0.9	(0.33,2.47)	0.845	0.54
PCB153	42/34	1				1				47/34	1				1
	38/32	0.73	(0.32,1.64)	0.444		0.59	(0.21,1.68)	0.324		19/34	0.39	(0.17,0.86)	0.02		0.4	(0.17,0.97)	0.041
	30/33	0.5	(0.21,1.19)	0.115		0.52	(0.18,1.55)	0.243		28/34	0.61	(0.28,1.3)	0.198		0.55	(0.23,1.31)	0.175
	23/33	0.35	(0.13,0.92)	0.034*	0.022*	0.18	(0.05,0.68)	0.011*	0.014*	43/34	0.89	(0.4,1.98)	0.774	1.00	0.68	(0.26,1.83)	0.45	0.537
PCB156	43/33	1				1				40/34	1				1
	39/33	0.65	(0.31,1.36)	0.257		0.68	(0.27,1.76)	0.431		27/34	0.72	(0.34,1.51)	0.388		0.94	(0.41,2.18)	0.889
	25/34	0.37	(0.15,0.9)	0.029*		0.34	(0.11,1.01)	0.053		26/34	0.69	(0.31,1.55)	0.369		0.8	(0.3,2.12)	0.652
	26/32	0.42	(0.17,1.02)	0.054	0.032*	0.31	(0.1,1)	0.050*	0.021*	44/34	1.15	(0.48,2.75)	0.746	0.627	1.22	(0.42,3.52)	0.717	0.704
PCB170	39/34	1				1				41/34	1				1
	38/33	0.86	(0.41,1.79)	0.679		0.8	(0.31,2.01)	0.629		28/34	0.71	(0.34,1.46)	0.347		0.87	(0.39,1.96)	0.737
	27/33	0.56	(0.23,1.33)	0.185		0.55	(0.19,1.61)	0.275		28/34	0.61	(0.25,1.49)	0.283		0.68	(0.23,1.96)	0.473
	29/32	0.64	(0.27,1.54)	0.321	0.217	0.38	(0.12,1.17)	0.092	0.066	40/34	0.92	(0.4,2.14)	0.854	1.00	0.94	(0.33,2.68)	0.906	0.905
PCB180	34/33	1				1				38/34	1				1
	44/33	1.21	(0.57,2.55)	0.616		1.28	(0.47,3.44)	0.632		37/34	0.93	(0.44,1.96)	0.857		1.15	(0.48,2.77)	0.75
	30/33	0.74	(0.31,1.72)	0.479		0.73	(0.25,2.15)	0.572		20/34	0.42	(0.17,1.06)	0.065		0.32	(0.1,1.03)	0.056
	25/33	0.63	(0.26,1.53)	0.312	0.15	0.48	(0.16,1.49)	0.205	0.079	42/34	1.10	(0.46,2.66)	0.829	0.889	0.84	(0.25,2.81)	0.779	0.534
HCB	54/34	1				1				32/33	1				1
	33/33	0.25	(0.09,0.69)	0.007*		0.25	(0.08,0.77)	0.016*		31/34	1.06	(0.48,2.3)	0.892		1.17	(0.47,2.93)	0.733
	16/33	0.09	(0.03,0.3)	<0.001*		0.04	(0.01,0.21)	<0.001*		42/34	1.48	(0.6,3.67)	0.398		1.49	(0.48,4.63)	0.488
	30/32	0.16	(0.05,0.54)	0.003	0.002*	0.07	(0.01,0.35)	0.001*	0.001*	32/34	1.14	(0.38,3.48)	0.812	0.647	1.26	(0.34,4.67)	0.731	0.688
DDE	44/33	1				1				37/34	1				1
	37/33	0.64	(0.29,1.41)	0.267		0.46	(0.16,1.26)	0.13		33/34	0.82	(0.37,1.83)	0.626		0.53	(0.19,1.45)	0.216
	25/34	0.37	(0.15,0.9)	0.028*		0.21	(0.07,0.65)	0.007*		35/34	0.83	(0.36,1.93)	0.672		0.4	(0.13,1.22)	0.107
	27/32	0.39	(0.15,1.02)	0.054	0.031*	0.16	(0.04,0.6)	0.006*	0.003*	32/34	0.74	(0.28,1.96)	0.54	0.591	0.41	(0.11,1.46)	0.167	0.143

OR – conditional logistic regression accounting for matching factors

OR^(adj) – conditional logistic regression additionally adjusting for BMI, height, educational level, vegetables, dairy, protein, total fat, alcohol

Matched case-control pairs with incomplete information on confounders were excluded from analyses; *Significant at the 95% confidence level