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Table 4 Inter-rater reliability measured by the smartphone applications for each position

From: Validity and reliability of smartphone applications for measurement of hip rotation, compared with three‐dimensional motion analysis

Positions ICC (lower, upper) SEM (°) %SEM LOA
Sitting IRa 0.67 (0.37, 0.84) 3.4 12.7 (-4.8, 14.7)
Sitting ERa 0.56 (0.20, 0.78) 3.3 9.9 (-3.8, 14.7)
Prone IRa 0.81 (0.71, 0.94) 4.1 10.7 (-14.6, 4.7)
Prone ERa 0.76 (0.52, 0.89) 3.9 8.8 (-14.4, 7.7)
Supine IRb 0.90 (0.79, 0.96) 2.7 4.8 (-9.9, 4.6)
Supine ERb 0.43 (0.04 0.71) 2.6 8.1 (-23.2, 12.1)
  1. IR internal rotation; ER external rotation; ICC intraclass correlation coefficient; SEM standard error of measurement; LOA limit of agreement
  2. a Measured by The Bubble Level and Clinometer
  3. b Measured by The Accurate Compass