Table 6.
Associations of demographic factors and the standard deviation of all normal-to-normal intervals grouping with survival of patients with amyotrophic lateral sclerosis by multivariate Cox regression analysis model A
| Parameters | Group | β | HR | 95% CI | P Value |
|---|---|---|---|---|---|
| Age (year) | – | 0.101 | 1.106 | [1.040–1.176 ] | 0.001* |
| Gender | Malea | ||||
| Female | − 0.182 | 0.834 | [0.311–2.237 ] | 0.718 | |
| Education level (year) | – | − 0.020 | 0.980 | [0.886–1.084 ] | 0.700 |
| SDNN (ms) | SDNN ≤ 100a | ||||
| SDNN > 100 | − 1.008 | 0.365 | [0.125–1.069 ] | 0.066 |
SDNN Standard deviation of all normal-to-normal intervals
*Statistically significant difference from reference group at P value < 0.05
aReference group