Table 3.

Multivariate logistic regression analysis of variables associated with the blood level of NK cells (above median vs below median) in the ALS cohort.

Variable	odds ratio	95% CI	p
Reference:
NK cells (≥ 236/µl)	1.0
Age at onset (years)	0.94	0.89–1.00	0.092
Gender (M vs F)	5.08	1.61–20.9	0.007
Interval onset-assay (months)	1.00	0.96–1.05	0.748
ΔFS	0.88	0.30–2.54	0.82
ALSFRS-R at evaluation	0.97	0.89–1.05	0.49
FVC%	1.00	0.98–1.03	0.53
Site of onset (S vs B)	0.20	0.05–0.87	0.033

CI, confidence interval