Table 4.

Adjusted odds ratio (OR) and 95% CI of prevalence of five components of metabolic syndrome by category of PBB-153 and PBDE-153^*

	Not detectable	Detectable				P trend‡	P quadratic
		<25th†	25th to <50th	50th to <75th	≥75th
Waist circumference >102 cm in men or >88 cm in women
PBB-153	Referent	1.3 (0.4–4.1)	3.5 (1.1–11.7)	2.4 (0.7–8.1)	2.1 (0.6–7.2)	0.28	0.09
PBDE-153	Referent	2.4 (0.6–9.3)	2.2 (0.6–8.6)	1.9 (0.5–7.4)	2.8 (0.7–10.8)	0.40	0.78
Triglycerides ≥1.7 mmol/l
PBB-153	Referent	3.2 (1.6–6.5)	4.2 (2.1–8.7)	3.7 (1.7–7.8)	3.8 (1.8–8.0)	<0.01	<0.01
PBDE-153	Referent	4.3 (1.9–9.5)	3.5 (1.5–7.9)	3.7 (1.6–8.4)	3.2 (1.4–7.5)	0.35	<0.01
HDL cholesterol <1.1 mmol/l in men or <1.4 mmol/l in women
PBB-153	Referent	2.1 (1.1–4.2)	2.4 (1.2–4.9)	2.5 (1.2–5.2)	2.5 (1.2–5.2)	0.05	0.07
PBDE-153	Referent	0.9 (0.4–1.9)	1.6 (0.8–3.4)	1.1 (0.5–2.3)	1.1 (0.5–2.3)	0.79	0.29
Blood pressure ≥130/85 mmHg
PBB-153	Referent	0.7 (0.3–1.4)	1.3 (0.6–2.5)	0.8 (0.4–1.7)	0.7 (0.3–1.4)	0.47	0.33
PBDE-153	Referent	1.4 (0.7–2.9)	1.6 (0.7–2.4)	1.5 (0.7–3.3)	1.3 (0.6–2.9)	0.65	0.23
Fasting glucose ≥5.6 mmol/l
PBB-153	Referent	1.0 (0.5–2.0)	1.2 (0.6–2.4)	1.2 (0.6–2.4)	1.6 (0.8–3.2)	0.11	0.63
PBDE-153	Referent	1.8 (0.9–3.8)	1.4 (0.6–2.9)	1.5 (0.7–3.1)	1.2 (0.6–2.5)	0.51	0.24

^*Adjusted for age, sex, race, poverty income ratio, BMI, cigarette smoking, serum cotinine, alcohol consumption, and exercise.

^†The median serum concentration in each category is displayed.

^‡P trend was calculated without a quadratic term in the model, while P quadratic was calculated including the linear term.