Table 5 Meta-analysis of measurement properties
Measurement property | Statistic | Number of | Pooled Effect | |||
|---|---|---|---|---|---|---|
Studies | Estimates | Estimate | 95%CI (lower to upper) | 95%PI (lower to upper) | ||
Reliability | MD | 25 | 69 | 0.5 | 0.1 to 0.9 | 0.1 to 0.9 |
| Â | TE | 25 | 52 | 1.6 | 1.4 to 1.9 | 0.9 to 3.0 |
| Â | ICC | 27 | 54 | 0.88 | 0.84 to 0.91 | 0.59 to 0.97 |
Convergent validity | r | 29 | 73 | –0.58 | – 0.62 to − 0.54 | − 0.77 to − 0.31 |