Shift work is associated with metabolic syndrome in male steel workers-the role of resistin and WBC count-related metabolic derangements

Table 4 Association of covariates with total WBC count and resistin

Factor	Total WBC count		Resistin
Factor	β-coefficient (95% CI)^a	p value	β-coefficient (95% CI)^a	p value
Body mass index	0.25 (0.09 to 0.13)	< 0.0001	0.14 (0.00 to 0.62)	0.048
Waist circumference	0.26 (0.04 to 0.05)	< 0.0001	0.12 (− 0.02 to 0.21)	0.10
Systolic BP	0.16 (0.01 to 0.02)	< 0.0001	0.13 (− 0.01 to 0.16)	0.08
Diastolic BP	0.15 (0.02 to 0.03)	< 0.0001	0.11 (− 0.03 to 0.21)	0.14
Fasting glucose	0.09 (0.00 to 0.01)	< 0.0001	0.24 (0.07 to 0.28)	0.001
HbA1C	0.17 (0.23 to 0.41)	< 0.0001	0.15 (0.05 to 3.54)	0.04
Total cholesterol	0.04 (0.00 to 0.01)	0.12	− 0.01 (− 0.04 to 0.03)	0.90
Triglyceride	0.25 (0.00 to 0.01)	< 0.0001	0.21 (0.01 to 0.03)	0.01
HDL-cholesterol	− 0.20 (− 0.04 to − 0.03)	< 0.0001	− 0.23 (− 0.26 to − 0.06)	0.001
LDL-cholesterol	0.03 (− 0.00 to 0.01)	0.18	− 0.04 (− 0.05 to 0.03)	0.57
Uric acid	0.10 (0.07 to 0.19)	< 0.0001	0.11 (− 0.19 to 1.55)	0.12
Shift work	0.16 (0.39 to 0.70)	< 0.0001	0.17 (0.49 to 5.38)	0.02
Metabolic syndrome (NCEP-ATP III)^b	0.22 (0.64 to 0.99)	< 0.0001	0.17 (0.53 to 5.73)	0.02

WBC white blood cell, BP blood pressure, HDL high-density lipoprotein, LDL low-density lipoprotein
^aAdjusted for age using multiple linear regression analysis
^bThe definition and criteria of NCEP-ATP III metabolic syndrome are described in the text