Impaired Fasting Glucose in Nondiabetic Range: Is It a Marker of Cardiovascular Risk Factor Clustering?

Table 1

Mean values for general demographics, anthropometric variables, aerobic capacity, and cardiovascular risk factors in subjects with normal and impaired fasting blood glucose adjusted by age and gender.

	NFG; (FBG <100 mg/dL); ( = 3180)	IFG; (FBG = 100–125 mg/dL); ( = 559)
Age (years)	51 ± 13	58 ± 11	<0.001
Female gender (%)	38%	24%	<0.001
Anthropometric variables
Waist circumference (cm)	91 ± 10	95 ± 11	<0.001
BMI (Kg/m^2)	26.6 ± 4	28.2 ± 4	<0.001
Aerobic capacity (METS)	12 ± 3	11 ± 3	<0.001
Framingham score (%)	6 ± 5	8 ± 5	<0.001
Cardiovascular risk factors
Obesity (%)	16%	29%	<0.001
Hypertension (%)	25%	34%	<0.001
Dyslipidemia (%)	74%	79%	0.05
Smoking (%)	20%	21%	NS
Physical inactivity (%)	51%	55%	NS

Data expressed in mean ± SD except where indicated.
NFG = normal fasting glucose; IFG = impaired fasting glucose; FBG = fasting blood glucose; BMI = body mass index; SD = standard deviation.