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Table 2 Stepwise multiple linear regression for associations between coronary risk factors and QTc interval

From: Effect of serum electrolytes within normal ranges on QTc prolongation: a cross-sectional study in a Chinese rural general population

 

Male

Female

Variables

Coefa

SEb

betac

Coefa

SEb

betac

Age (per 10 years)

4.98

0.35

0.25

1.82

0.38

0.08

current smoking (yes/no)

1.55

0.60

0.04

3.60

0.80

0.06

waist circumference

0.20

0.03

0.09

0.23

0.03

0.10

Hypertension

5.58

0.63

0.13

3.34

0.64

0.08

Diabetes (yes/no)

2.66

1.04

0.04

Estimated GFR

0.09

0.03

0.06

0.09

0.03

0.06

Serum uric acid

0.01

0.004

0.05

Serum calcium

5.77

2.44

0.04

10.72

2.34

0.07

Serum potassium

−7.76

0.85

−0.13

−6.44

0.88

−0.10

Serum magnesium

20.23

3.87

0.08

9.93

2.28

0.06

LVMIht2.7

0.03

0.01

0.04

  1. The short dashes meaned that the variable was removed by the stepwise process, and there were other adjusted variables including dietscore, current drinking, BMI, physical activity, dyslipidaemia, and serum sodium which also removed from all the models finally. a unstandardized coefficient, bstandard error, cstandardized beta. , and the P <0.05 for all β values in the table