Table 2.

Association of pre-pregnancy serum polybrominated and polychlorinated biphenyl levels with gestational diabetes (n = 258)

	Unadjusteda	Adjustedb
Polybrominated biphenyl (rescaled, natural-log transformed)
153	0.73 (0.37, 1.43)	0.68 (0.31, 1.49)
Polychlorinated biphenyls (rescaled, natural-log transformed)
28	0.91 (0.42, 1.98)	0.90 (0.24, 3.31)
44	0.83 (0.20, 3.43)	0.88 (0.24, 3.23)
66	0.96 (0.58, 1.60)	0.96 (0.49, 1.87)
74	0.89 (0.44, 1.81)	0.52 (0.13, 2.06)
99	1.00 (0.67, 1.48)	0.78 (0.48, 1.29)
101	1.05 (0.75, 1.48)	1.00 (0.69, 1.47)
105	1.09 (0.76, 1.57)	0.88 (0.57, 1.36)
110	0.88 (0.54, 1.44)	0.82 (0.46, 1.46)
114	0.69 (0.40, 1.21)	0.53 (0.28, 1.00)
118	1.02 (0.69, 1.50)	0.81 (0.51, 1.29)
138	0.75 (0.46, 1.24)	0.53 (0.29, 0.99)
146	0.73 (0.43, 1.22)	0.53 (0.28, 1.02)
153	0.70 (0.41, 1.21)	0.48 (0.24, 0.98)
156	0.57 (0.32, 1.02)	0.42 (0.21, 0.87)
157	0.70 (0.43, 1.13)	0.57 (0.32, 1.03)
167	0.57 (0.31, 1.06)	0.42 (0.21, 0.84)
170	0.61 (0.33, 1.12)	0.40 (0.18, 0.88)
172	0.60 (0.34, 1.09)	0.44 (0.23, 0.86)
177	0.73 (0.31, 1.69)	0.46 (0.17, 1.25)
178	0.66 (0.36, 1.18)	0.50 (0.25, 0.98)
180	0.59 (0.32, 1.08)	0.41 (0.19, 0.87)
183	0.91 (0.56, 1.50)	0.65 (0.31, 1.35)
187	0.68 (0.34, 1.33)	0.48 (0.21, 1.09)
194	0.68 (0.42, 1.12)	0.50 (0.27, 0.95)
195	0.76 (0.47, 1.23)	0.63 (0.37, 1.07)
196	0.79 (0.48, 1.30)	0.60 (0.33, 1.11)
201	0.75 (0.44, 1.27)	0.62 (0.33, 1.17)
206	0.91 (0.58, 1.41)	0.72 (0.41, 1.27)
209	1.09 (0.75, 1.59)	0.92 (0.61, 1.41)

Values are odds ratios (95 % confidence intervals) from multivariable binary logistic regression with no gestational diabetes as the referent category. P-values <0.05 are bolded

^aCorresponds to directed acyclic graph from Fig. 1, Panel a

^bAdjusted for total serum lipids estimated from the Phillips 1989 equation, age, and waist-to-height ratio, all specified continuously. Corresponds to directed acyclic graph from Fig. 1 , Panel b