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Table 1 The results of intra- and interrater reliability tests for the displacement and velocity of the swallowing structures

From: STAMPS: development and verification of swallowing kinematic analysis software

Parameter

Intrarater reliability

Interrater reliability

ICC

95% CI

ICC

95% CI

Lower

Upper

Lower

Upper

Hyoid bone, maximal displacement (mm)

 Vertical

0.981

0.924

0.995

0.928

0.710

0.982

 Horizontal

0.990

0.962

0.998

0.972

0.886

0.993

 Two dimensional

0.979

0.914

0.995

0.948

0.790

0.987

Hyoid bone, maximal velocity (mm/s)

 Vertical

0.982

0.926

0.995

0.922

0.686

0.981

 Horizontal

0.990

0.960

0.998

0.984

0.937

0.996

 Two dimensional

0.949

0.796

0.987

0.960

0.839

0.990

Larynx, maximal displacement (mm)

 Vertical

0.959

0.836

0.990

0.860

0.438

0.965

 Horizontal

0.869

0.471

0.967

0.893

0.571

0.974

 Two dimensional

0.947

0.785

0.987

0.965

0.858

0.991

Larynx, maximal velocity (mm/s)

 Vertical

0.939

0.755

0.985

0.809

0.231

0.953

 Horizontal

0.701

− 0.202

0.926

0.666

− 0.346

0.917

 Two dimensional

0.946

0.782

0.987

0.797

0.183

0.950

Arytenoid, maximal displacement (mm)

 Vertical

0.883

0.528

0.971

0.895

0.577

0.974

 Horizontal

0.855

0.418

0.964

0.767

0.060

0.942

 Two dimensional

0.927

0.707

0.982

0.905

0.617

0.976

Epiglottis, maximal tilt angle (degree)

 From the initial position

0.906

0.622

0.977

0.868

0.468

0.967

 From the y axis

0.889

0.554

0.972

0.886

0.539

0.972

Epiglottis, maximal angular velocity (degree/s)

0.554

− 0.795

0.889

0.680

− 0.290

0.920

Upper esophageal sphincter opening, distance (mm)

0.988

0.951

0.997

0.980

0.919

0.995

Liquid bolus, maximal velocity (mm/s)

0.988

0.953

0.997

0.924

0.692

0.981