Model | MAE | RMSE | Adjusted R^{2} |
---|---|---|---|
Total score‡ | 0.115 | 0.151 | 0.298 |
Total score+total score^{2} | 0.119 | 0.152 | 0.306 |
Dichotomised, all individual item scores | 0.117 | 0.155 | 0.285 |
All individual item scores§ | 0.111 | 0.150 | 0.324 |
Most parsimonious model based on individual item scores | 0.112 | 0.150 | 0.323 |
Most intuitive model based on individual item scores | 0.112 | 0.150 | 0.319 |
‡In acknowledgement that not all who wish to use a mapping algorithm will have access to individual item score data, the total score algorithm which did not perform as well as the preferred individual MSWS-12 item-score equation is provided here (EQ-5D=−0.003*^{†} (transformed MSWS-12 total score)+0.894 (constant)); note that an asterisk (*) indicates the item was multiplied by/multiplication operator and a dagger (^{†}) denotes a p value <0.05.
§Preferred model.
MAE, MSWS-12, 12-item Multiple Sclerosis Walking Scale; mean absolute error; OLS, ordinary least squares; RMSE, root mean square error.