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Table 4 Linear regression analysis of the association between QTC interval (ms) and independent variables

From: The relationship between demographic features, anthropometric parameters, sleep duration, and physical activity with ECG parameters in Fasa Persian cohort study

Variables

Univariate

Multivariate

B

95% CI

P-value

B

95% CI

P-value

Age

0 .412

0.328, 0.497

< 0.001

0.331

0.225, 0.437

< 0.001

Gender

      

Male

Ref

     

Female

19.38

17.84, 20.93

< 0.001

16.82

15.03, 18.62

< 0.001

Marital status

      

Unmarried

Ref

     

Married

− 3.25

− 7.52, 1.009

0.135

− 1.82

− 5.97, 2.31

0.387

Widowed or divorced

6.24

1.21, 11.26

0.015

− 3.98

− 8.92, 0.967

0.115

BMI

0.899

0.738, 1.061

< 0.001

0.316

0.150, 0.482

< 0.001

Education level

− 1.17

− 1.37, − 0.963

< 0.001

− 0.093

− 0.345, 0.159

0.470

Wrist circumference

− 1.35

− 1.94, − 0.760

< 0.001

1.32

0.712, 1.940

< 0.001

Hip circumference

0.369

0.279, 0.460

< 0.001

0.152

0.061, 0.243

0.001

Waist circumference

0.455

0.388, 0.521

< 0.001

0.168

0.099, 0.238

< 0.001

MET

− 0.490

− 0.563, − 0.418

< 0.001

− 0.234

− 0.308, − 0.159

< 0.001

Diabetes

      

No

Ref

     

Yes

7.40

5.01, 9.80

< 0.001

0.251

− 2.14, 2.64

0.837

Hypertension

      

No

Ref

     

Yes

10.97

9.01, 12.93

< 0.001

2.423

0.280, 4.56

0.027

Cardiac ischemic disease

      

No

Ref

     

Yes

8.08

5.56, 10.59

< 0.001

1.961

− 0.587, 4.51

0.131

Sleep duration

− 0.012

− 0.437, 0.412

0.955

–

–

–

  1. BMI body mass index, MET metabolic equivalent of task
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BMC Cardiovascular Disorders

ISSN: 1471-2261

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