Table 2.

Arithmetic means of PCB and PBDE congeners (ng/g lipid) and detection rate of congeners in each group

Congeners	Pre-eclampsia(n = 45)		Control (n = 70)		P-value*
	Detection rate	Mean ± SD	Detection rate	Mean ± SD
PCB28	33 (73.33)	0.03 ± 0.02	40 (57.14)	0.01 ± 0.01	<0.001
PCB52	17 (37.78)	0.014 ± 0.014	18 (25.71)	0.010 ± 0.014	0.37
PCB99	26 (57.78)	0.02 ± 0.01	29 (41.43)	0.01 ± 0.01	0.06
PCB101	18 (40)	0.01 ± 0.01	14 (20)	0.008 ± 0.007	0.05
PCB118	42 (93.33)	0.04 ± 0.02	51 (72.86)	0.02 ± 0.01	<0.001
PCB138	45 (100)	1.51 ± 1.03	70 (100)	0.81 ± 0.66	<0.001
PCB153	45 (100)	1.84 ± 1.25	70 (100)	1.13 ± 1.02	<0.001
PCB180	44 (97.78)	0.19 ± 0.17	45 (64.29)	0.05 ± 0.05	<0.001
PCB187	38 (84.44)	0.07 ± 0.07	24 (34.29)	0.02 ± 0.03	<0.001
PBDE28	35 (77.78)	0.05 ± 0.06	14 (20)	0.01 ± 0.01	<0.001
PBDE47	38 (84.44)	0.10 ± 0.12	36 (51.43)	0.05 ± 0.07	0.001
PBDE99	39 (86.67)	0.06 ± 0.07	25 (35.71)	0.02 ± 0.03	<0.001
PBDE100	10 (22.22)	0.01 ± 0.008	8 (11.43)	0.01 ± 0.004	0.71
PBDE153	45 (100)	1.88 ± 1.52	70 (100)	1.07 ± 0.83	0.001
PBDE154	6 (13.33)	0.01 ± 0.007	4 (0.54)	0.01 ± 0.003	0.35
PBDE183	24 (53.33)	0.03 ± 0.03	24 (34.29)	0.02 ± 0.02	0.13
PBDE209	7 (15.56)	0.01 ± 0.006	14 (20)	0.01 ± 0.007	0.86

Date shown as mean ± SD and numbers with percentages in parenthesis

*P-value refers to comparison of means by Mann–Whitney U-test between congener’s concentrations. Significant P-value was bolded