Table 6 Regression algorithms for converting NIHSS data into AQoL scores
Model | Predictor | β | SE | t | Sig. |
|---|---|---|---|---|---|
NIHSS Index | Â | Â | Â | Â | Â |
All stroke | (Constant) | 0.4639 | 0.0044 | 104.97 | 0.000 |
| Â | NIHSS | 0.0024 | 0.0020 | 1.20 | 0.230 |
| Â | NIHSS*NIHSS | -0.0000 | 0.0000 | -1.22 | 0.224 |
| Â |
| 0.7856 | Â | F849,1718 = 8.45 | 0.000 |
| Â | Â | Obs = 1302 | Ids = 705 | F2,595 = 1.35 | 0.259 |
| Â | Â | Â | R2 within = 0.00 | R2 between = 0.17 | R2 overall = 0.12 |
NIHSS = 0–5 | (Constant) | 0.4754 | 0.0066 | 72.07 | 0.000 |
| Â | NIHSS | 0.0802 | 0.0178 | 4.52 | 0.000 |
| Â | NIHSS*NIHSS | -0.0170 | 0.0046 | -3.68 | 0.000 |
| Â |
| 0.7955 | Â | F652,540 = 6.27 | 0.000 |
| Â | Â | Obs = 1195 | Ids = 653 | F2,540 = 11.41 | 0.000 |
| Â | Â | Â | R2 within = 0.04 | R2 between = 0.00 | R2 overall = 0.00 |
NIHSS ≥ 6 | (Constant) | 0.2882 | 0.0874 | 3.30 | 0.001 |
| Â | NIHSS | -0.0247 | 0.0133 | -1.85 | 0.064 |
| Â | NIHSS*NIHSS | 0.0005 | 0.0004 | 1.19 | 0.234 |
| Â |
| 0.7680 | - | - | - |
|  |  | Obs = 103 | Ids = 88 | Wald χ2 = 11.58 | 0.003 |
| Â | Â | Â | R2 within = 0.00 | R2 between = 0.12 | R2 overall = 0.12 |
NIHSS Item | Â | Â | Â | Â | Â |
All stroke | (Constant) | 0.4499 | 0.0059 | 76.81 | 0.000 |
| Â | Visual fields | -0.0475 | 0.0232 | -2.05 | 4.53 |
| Â | Facial weakness | 0.0909 | 0.0201 | 4.53 | 0.000 |
| Â |
| 0.8103 | Â | F704,595 = 6.86 | 0.000 |
| Â | Â | Obs = 1302 | Ids = 705 | F2,595 = 10.89 | 0.000 |
| Â | Â | Â | R2 within = 0.04 | R2 between = 0.03 | R2 overall = 0.01 |
NIHSS = 0–5 | (Constant) | 0.4810 | 0.0055 | 88.15 | 0.000 |
| Â | Facial weakness | 0.0984 | 0.0232 | 4.24 | 0.000 |
| Â | Limb ataxia | 0.0630 | 0.0273 | 2.31 | 0.021 |
| Â |
| 0.7984 | Â | F652,540 = 6.67 | 0.000 |
| Â | Â | Obs = 1195 | Ids = 653 | F2,540 = 12.42 | 0.000 |
| Â | Â | Â | R2 within = 0.04 | R2 between = 0.01 | R2 overall = 0.01 |
NIHSS ≥ 6 | (Constant) | 0.0732 | 0.0496 | 1.48 | 0.191 |
| Â | Consciousness | -0.3052 | 0.0572 | -5.34 | 0.002 |
| Â | Eye movements | 0.3073 | 0.0846 | 3.63 | 0.011 |
| Â | Facial weakness | -0.1033 | 0.0263 | -3.93 | 0.008 |
|  | Motor – Left arm | 0.0760 | 0.0208 | 3.65 | 0.011 |
|  | Motor – Right leg | -0.3157 | 0.0364 | -8.66 | 0.000 |
|  | Motor – Left leg | 0.2980 | 0.0415 | 7.18 | 0.000 |
| Â | Sensory | -0.1340 | 0.0310 | -4.33 | 0.005 |
| Â | Language | 0.1336 | 0.0319 | 4.19 | 0.006 |
| Â | Extinction/Inattention | -0.1198 | 0.0270 | -4.44 | 0.004 |
| Â |
| 0.6653 | Â | F87,6 = 32.07 | 0.000 |
| Â | Â | Obs = 103 | Ids = 88 | F9,6 = 10.36 | 0.005 |
| Â | Â | Â | R2 within = 0.94 | R2 between = 0.05 | R2 overall = 0.05 |
