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Table 2: test-retest and interrater reproducibility of serratus anterior hand held dynamometer strenght testing

From: Validity and reliability of serratus anterior hand held dynamometry

  Test (N) Retest (N) Diff test-retest (N) 95% LoA (N) ICC3.1 agreement SEM agreement SDC agreement
mean (SD) mean (SD) mean (SD)   (95 % CI) (N) (N)
test-retest        
Pos A 383.88 (77.65) 404.92 (84.96) -21.05 (60.22) -139.08; 96.98 0.712 (0.420; 0.871 44,10 122,40
Pos B 314.43 (75.1) 322.34 (82.34) -7.90 (65.90) -137.06; 121.26 0.658 (0.324; 0.846) 45,80 127,00
Pos C 351,54 (100.36) 376.16 (93.55) -24.62 (59.37) -140.99; 91.75 0.794 (0.490; 0.916) 44,52 123,40
  Tester JI Tester HK Diff Tester JI VS HK     
Interrater mean (SD) mean (SD) mean (SD)     
Pos A 383.88 (77.65) 340.44 (82.95) 43.43* (92.74) -138.34; 225.20 0.794; (0.552; 0.912) 55,80 196,80
Pos B 314.43 (75.10) 264.21 (61.76) 50.21* (78.85) -104.34; 204.76 0.277 (-0.089; 0.605) 55,80 154,50
Pos C 351.54 (100.36) 265.10 (40,0)) 86.48* (86.21) -82.49; 255.45 0.226 (-0.107; 559) 85,31 236,47
  1. N Newton, SD Standard deviation, Diff Difference, LoA limits of agreement, ICC Intraclass correlation coefficient, CI Confidence interval, SEM Standard error of measurement, SDC Smallest detectable change, % percentage; *: p<0.001