Table 4. Multivariate logistic regression analysis of predictors of long- and short-term survival in Taiwanese ALS patients, 1999–2008.

(A) Long-term vs average survival
Predictors	Odds-ratio (95% CI)	P value
Age at ALS diagnosis, y	0.965 (0.946–0.984)	<0.001
Insurance premium
From salary	1.000
Dependent or receiving social welfare	1.970 (1.143–3.396)	0.015
Non-invasive positive pressure ventilation
No	1.000
Yes	2.033 (1.116–3.704)	0.020

(B) Short-term vs average survival
Predictors	Odds ratio (95% CI)	P value
ALS diagnosis age, y	1.024 (1.004–1.045)	0.020
Insurance premium
From salary	1.000	0.006
Dependent or receiving social welfare	0.495 (0.299–0.819)
Tracheotomy with mechanical ventilation
No	1.000
Yes	0.361 (0.177–0.735)	0.005
Riluzole use
No	1.000
Yes	0.457 (0.279–0.748)	0.002