Group | Number of cases | Left | Right | ||||
---|---|---|---|---|---|---|---|
X | Y | Z | X | Y | Z | ||
Improvement rates < 25% group | 5 | −10.8 (1.6) | −1.7 (3.2) | −4.5 (0.4) | 11.5 (1.6) | −1.9 (2.0) | −4.8 (1.2) |
Improvement rates 25–50% group | 11 | −11.7 (3.2) | − 1.5 (2.5) | − 4.3 (1.9) | 11.6 (2.4) | −1.9 (1.2) | − 4.3 (1.5) |
Improvement rates > 50% group | 41 | −11.7 (2.1) | − 1.8 (1.6) | −3.7 (1.6) | 12.3 (1.8) | − 1.7 (2.1) | − 3.8 (1.2) |
Kruskal-Wallis χ2 | 1.888 | 0.529 | 1.970 | 1.039 | 0.194 | 3.847 | |
P | 0.389 | 0.768 | 0.373 | 0.595 | 0.908 | 0.146 |