Table 4 Predictive accuracy of the algorithms by total WOMAC score interval
From: Assessing the external validity of algorithms to estimate EQ-5D-3L from the WOMAC
Total WOMAC | n | Barton | Xie | Wailoo | ||
|---|---|---|---|---|---|---|
WA | CEC | |||||
0–10 | 195 | ME (95 % CI) | −0.081 (−0.106 to −0.057) | −0.053 (−0.078 to −0.029) | 0.048 (0.024 to 0.072) | 0.093 (0.069 to 0.117) |
MAE | 0.143 | 0.132 | 0.110 | 0.117 | ||
RMSE | 0.191 | 0.181 | 0.175 | 0.195 | ||
10–30 | 326 | ME (95 % CI) | −0.021 (−0.034 to −0.009) | 0.013 (0.002 to 0.025) | 0.004 (−0.009 to 0.017) | 0.019 (0.003 to 0.034) |
MAE | 0.068 | 0.057 | 0.080 | 0.101 | ||
RMSE | 0.113 | 0.109 | 0.117 | 0.141 | ||
30–50 | 336 | ME (95 % CI) | −0.085 (−0.104 to −0.066) | 0.034 (0.016 to 0.053) | −0.119 (−0.137 to −0.100) | −0.014 (−0.033 to 0.005) |
MAE | 0.160 | 0.093 | 0.184 | 0.112 | ||
RMSE | 0.195 | 0.175 | 0.210 | 0.178 | ||
50–100 | 211 | ME (95 % CI) | −0.143 (−0.175 to −0.111) | 0.135 (0.100 to 0.170) | −0.218 (−0.250 to −0.185) | −0.307 (−0.350 to −0.264) |
MAE | 0.258 | 0.187 | 0.295 | 0.351 | ||
RMSE | 0.277 | 0.294 | 0.322 | 0.443 | ||