Table 2

Item selection for the MTSS score

Theoretical domainItemTest–retest reliabilityResponsiveness analysis*
ICC (95% CI)β-coefficientR2p Value
Limitation in sporting activities
 Current sporting activities0.80 (0.67 to 0.88)−0.430.0650.04
 Current amount of sporting activities0.76 (0.61 to 0.86)−0.030.0010.78
 Current content of sporting activities0.84 (0.73 to 0.91)−0.380.114<0.01
Pain while performing sporting activities
 Pain while performing sporting activities0.63 (0.43 to 0.78)−0.450.129<0.01
 Time to onset of pain during sporting activities0.72 (0.56 to 0.84)−0.440.201<0.01
 Pain throughout sporting activities 10.44 (0.19 to 0.65)−0.110.0180.31
 Pain throughout sporting activities 20.34 (0.07 to 0.57)−0.150.0310.18
 Pain after sporting activities0.74 (0.58 to 0.85)−0.200.0480.09
Pain while performing activities of daily life
 Pain while standing0.72 (0.55 to 0.84)−0.550.0980.01
 Pain while walking0.82 (0.70 to 0.90)−0.500.0890.02
 Pain while walking up or downstairs0.86 (0.76 to 0.92)−0.180.0080.48
 Pain while performing common daily activities0.48 (0.23 to 0.67)−0.520.107<0.01
Pain at rest
 Pain at rest0.60 (0.39 to 0.76)−0.210.0190.28
 Pain at night0.91 (0.85 to 0.95)0.220.0230.22
 Pain to touch0.50 (0.26 to 0.69)−0.190.0590.06
  • Items in italics were selected for use in the MTSS score.

  • *As assessed with linear regression analysis. β indicates how the GPE scale changes for each extra unit of the item; R2 represents the magnitude of the relation between the GPE scale and each item.

  • ADL, activities of daily living; GPE, global perceived effect; ICC, intraclass correlation coefficient; MTSS, medial tibial stress syndrome.