Reliability, agreement, and validity of digital weighing scale with MatScan in limb load measurement

1
Reliability, agreement, and validity of digital
weighing scale withMatScan in limb load
measurement

• Senthil N. S. Kumar, MSc Baharudin Omar, PhD
  Ohnmar Htwe, MD Leonard H. Joseph, MsPT
  Jagannathan Krishnan, PhD Ali Jafarzedah
  Esfehani, MD Lee L. Min, BScPT (Hons)

2

• Aim
• Investigate reliability, agreement, and validity
  of digital weighing scales (DWSs) with MatScan to
  measure limb loading asymmetry (LLA).
• Relevance
• If proven valid and reliable, DWSs could provide
  practitioners with an objective limb load
  measurement tool suitable for everyday clinical
  practice.

3
Method

• Cross-sectional study with 33 nondisabled
  participants.
• Weight distribution and plantar pressure on
  individual lower limb were measured using two
  DWSs (A, B) and MatScan during eyes open (EO) and
  eyes closed (EC) conditions.

4
Results

• Intra- and interrater reliability
• Excellent within and between DWSs A and B.
• Bland-Altman plot
• Good agreement between DWS and MatScan in EO and
  EC conditions.
• Area under receiver operating characteristic
  curve
• Significant.

5
Conclusion

• Measurements obtained with DWSs were valid and
  agreed with MatScan measurements.
• DWSs could be used interchangeably with MatScan
  and could provide clinicians an objective
  measurement of limb loading suitable for clinical
  settings.