TABLE 4.
Univariate analysis of nitrous oxide (N2O)‐related factors influencing neurological disease outcomes
| Influencing factor | Complete recovery group (n = 34) | Noncomplete recovery group (n = 17) | c 2 | p |
|---|---|---|---|---|
| Age (y) | 7.013 | 0.008 | ||
| <18 | 11 | 0 | ||
| ≥18 | 23 | 17 | ||
| Sex | 3.279 | 0.070 | ||
| M | 17 | 13 | ||
| F | 17 | 4 | ||
| Duration of N2O abuse (months) | 1.29 | 0.256 | ||
| <3 | 7 | 6 | ||
| ≥3 | 27 | 11 | ||
| Duration of medical history (months) | 3.632 | 0.057 | ||
| <3 | 31 | 12 | ||
| ≥3 | 3 | 5 | ||
| Vitamin B12 deficiency | 0.039 | 0.842 | ||
| No | 15 | 7 | ||
| Yes | 19 | 10 | ||
| Elevated homocysteine | 0.842 | 0.306 | ||
| No | 11 | 8 | ||
| Yes | 23 | 9 | ||
| Anemia | 0.177 | 0.674 | ||
| No | 22 | 12 | ||
| Yes | 12 | 5 | ||
| Spinal MRI | 1.457 | 0.227 | ||
| Normal | 18 | 12 | ||
| Abnormal | 16 | 5 |
MRI, magnetic resonance imaging.