Duration of follow-up category (years) | Mean duration of follow-up (years) | Number of cases | Change in total spiral score* | Neurologist was able to correctly establish the order |
---|---|---|---|---|
≤2.5 | 1.9 | 9 | 0.39±1.11 | 4 of 9 (44.4%) |
>2.5–5 | 3.7 | 40 | 0.44±0.88 | 23 of 40 (57.5%) |
>5–7.5 | 6.3 | 37 | 0.76±0.83 | 26 of 37 (70.3%) |
>7.5–12.4 | 9.3 | 30 | 0.87±1.09 | 23 of 30 (76.7%) |
p=0.039 (test for trend)† | p=0.029 (test for trend)‡ |
*Values represent mean±SD.
†Linear regression analysis in which the dependent variable was the change in total spiral score and the independent variable was the duration of follow-up category.
‡Linear regression analysis in which proportion of correctly ordered cases was the dependent variable and duration of follow-up category was the independent variable.