Table 5. Logistic regression analysis of interaction of age and other factors.
| Interactive variables | β | OR (95% CI) | P |
|---|---|---|---|
| Age and stroke history | |||
| Age | 0.022 | 1.023 (0.983–1.064) | 0.266 |
| Stroke history | −3.058 | 0.047 (0.000–91.865) | 0.429 |
| Age-stroke history interaction | 0.056 | 1.057 (0.942–1.187) | 0.344 |
| Age and admission NIHSS | |||
| Age | 0.014 | 1.014 (0.965–1.067) | 0.580 |
| Admission NIHSS | –0.193 | 0.825 (0.265–2.570) | 0.740 |
| Age-admission NIHSS interaction | 0.007 | 1.007 (0.989–1.026) | 0.432 |
| Age and OCSP | |||
| Age | −0.064 | 0.938 (0.776–1.133) | 0.507 |
| OCSP | −2.079 | 0.125 (0.005–3.388) | 0.217 |
| Age-OCSP interaction | 0.027 | 1.027 (0.976–1.082) | 0.306 |
| Age and TOAST classification | |||
| Age | 0.105 | 1.110 (0.988–1.248) | 0.080 |
| TOAST classification | 0.981 | 2.667 (0.443–16.050) | 0.284 |
| Age-TOAST classification interaction | −0.018 | 0.982 (0.955–1.011) | 0.222 |
| Age and GSH/GSSG | |||
| Age | 0.001 | 1.001 (0.891–1.124) | 0.990 |
| GSH/GSSG | −0.262 | 0.770 (0.491–1.207) | 0.254 |
| Age-GSH/GSSG interaction | 0.002 | 1.002 (0.996–1.009) | 0.471 |
| Age and T-AOC | |||
| Age | 0.097 | 1.102 (0.970–1.252) | 0.137 |
| T-AOC | 0.031 | 1.032 (0.921–1.156) | 0.589 |
| Age-T-AOC interaction | −0.001 | 0.999 (0.997–1.001) | 0.347 |
| Age and GSH-PX | |||
| Age | 0.080 | 1.083 (0.989–1.186) | 0.087 |
| GSH-PX | 0.163 | 1.177 (0.885–1.565) | 0.263 |
| Age-GSH-PX interaction | −0.002 | 0.998 (0.993–1.002) | 0.300 |
CI, confidence interval; GSH/GSSG, reduced glutathione/oxidized glutathione; GSH-PX, glutathione peroxidase; NIHSS, National Institutes of Health Stroke Scale; OCSP, Oxfordshire Community Stroke Project; OR, odds ratio; T-AOC, total antioxidant capacity; TOAST, Trial of Org 10,172 in Acute Stroke Treatment.