Table 5: Univariate regression analysis of relation of components of metabolic syndrome and FEV1/FVC ratio.

Regression coefficientStandard error value1

Abdominal circumferenceNA
Low serum HDL-cholesterol0.7120.6860.300
High serum glucose−0.0100.7530.989

1Data presented as linear regression coefficient, value for linear regression analysis.
Abdominal circumference is not applicable, because all patients fulfill the criteria for abdominal circumference according to the NCEP-ATP III criteria for metabolic syndrome.