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Table 2 Multiple regression analysis, correlation coefficients, significance, 95% confidence interval standard deviation and mathematical model

From: The relationship between mitral annular systolic velocity and ejection fraction in patients with preserved global systolic function of the left ventricle

Number of patients (n=308)

Correlation coefficient (R)

95% confidence interval (CI)

Asymptotic significance (p)

Multiple correlation EF/Sm(avg)

0.978

0.975–0.980

< 0.0001

  Controls (n=70)

0.936

0.932–0.938

< 0.0001

  HTN (n=56)

0.882

0.880–0.886

< 0.0001

  DD (n=65)

0.906

0.902–0.910

< 0.0001

  DM (n=52)

0.948

0.942–0.950

< 0.0001

  HTN/DD/DM (n=65)

0.963

0.960–0.968

< 0.0001

 

Meaning

Standard Deviation (SD)

 

Constant

45.0

±1.882

p < 0.0001

Coefficient

2.0

±0.191

p < 0.0001

Equation

 

EF = 45.0 + 2 X Sm(avg)