Jogi P, Spaulding SJ, Zecevic AA, Overend TJ, Kramer JF. Comparison of the original and reduced versions of the Berg Balance Scale and the Western Ontario and McMaster Universities Osteoarthritis Index in patients following hip- or knee-joint arthroplasty. Physiother Can. 2010; 107–114:63–1. doi:10.3138/ptc.2009-26.
Physiotherapy Canada 63:1 (Winter 2011), p. 111: Table 6 states that 95% confidence intervals (CIs) are reported for the standardized response means (SRMs), but in fact the original table reports 68% CIs. The corrected Table 6 below provides the 95% confidence interval when the approximated standard error which is 1/square root of n was multiplied by 1.96. A corrected version of this article (doi:10.3138/ptc.2009-26) now appears at Physiotherapy Canada Online. The authors and the publisher regret this error.
Table 6.
Standardized response means for the original and reduced versions of the Berg Balance Scale (BBS) and the Western Ontario–McMaster Universities Osteoarthritis Index (WOMAC) (n=54)
| Outcome Measures | SRM (95% CI) |
|---|---|
| BBS | 1.9 (1.64–2.16) |
| Short BBS | 1.8 (1.54–2.06) |
| WOMAC Pain | 1.0 (0.74–1.26) |
| Hirsch-WOMAC Pain | 0.9 (0.64–1.16) |
| Whitehouse-WOMAC Pain | 1.0 (0.74–1.26) |
| WOMAC function | 1.7 (1.44–1.96) |
| Hirsch-WOMAC function | 1.4 (1.14–1.66) |
| Whitehouse-WOMAC function | 1.5 (1.24–1.76) |
| Tubach-WOMAC function | 1.5 (1.24–1.76) |
SRM=standardized response mean; 95% CI=95% confidence interval