Table 2.

Adjusted Linear Regression Analysis for the Association between Biomarker Levels and Obesity Class, NHANES 1999–2004

Obesity class (body mass index, kg/m2)	Change in CRP level (mg/dl) ± SE	Change in fibrinogen level (mg/dl) ± SE
Normal (<25.0)	Referencea	Referenceb
Overweight (25.0–29.9)	0.11 ± 0.03*	11.5 ± 3.9*
Obesity class 1 (30.0–34.9)	0.21 ± 0.03*	25.6 ± 5.0*
Obesity class II (35.0–39.9)	0.43 ± 0.09*	40.0 ± 7.6*
Obesity class III (≥40.0)	0.73 ± 0.09*	93.5 ± 10.1*

Regression model adjusted for age, gender, race/ethnicity, systolic blood pressure, diastolic blood pressure, triglyceride level, smoking, arthritis status, and alcohol

*p < 0.01, compared to reference value

^aCRP reference value: 0.05 mg/dl

^bFibrinogen reference value: 287.28 mg/dl