Table II.

Factors influencing survival at the time of amyotrophic lateral sclerosis diagnosis

Variable	HR	95% CI for HR		P-value
		Lower	Upper
Bulbar form	2.174	1.261	3.747	0.005
FVC < 70%	1.945	1.019	3.713	0.044
R20HZ < 120	0.739	0.315	1.736	0.488
R5HZ < 120	0.669	0.371	1.206	0.181
PImax < 50	1.957	1.014	3.775	0.045
PEmax < 50	2.156	1.117	4.162	0.022

FVC – forced vital capacity, PI_max – maximum inspiratory pressure, PE_max – maximum expiratory pressure.