. 2020 Feb 4;10:1783. doi: 10.1038/s41598-020-58687-z

Table 2.

Group comparisons of the baseline cervical spinal cord cross-sectional area.

Group	N	CSA in mm²	Statistics
ALS	158	61 [7]	F(1,240) = 10.7, p = 0.001
Controls	86	64 [7]	F(1,240) = 10.7, p = 0.001
Limb-onset ALS	110	60 [7]	F(1,153) = 5.4, p = 0.02
Bulbar-onset ALS	45	62 [6]	F(1,153) = 5.4, p = 0.02
Classic ALS	108	61 [7]	F(3,154) < 1.7, p > 0.2
LMND ALS	27	59 [6]
UMND ALS	14	62 [7]
PLS	9	56 [7]
Sporadic ALS	49	61 [7]	F(1,61) = 1, p = 0.4
Familial ALS	14	63 [8]	F(1,61) = 1, p = 0.4
No NIV	122	61 [7]	F(1,136) = 0.9, p = 0.4
NIV	16	61 [6]	F(1,136) = 0.9, p = 0.4

Mean [SD] of the baseline cervical spinal cord cross-sectional area (CSA) is given. ALS, amyotrophic lateral sclerosis; LMND, lower motor neuron dominant; N, number; NIV, non-invasive ventilation; PLS, primary lateral sclerosis; UMND, upper motor neuron dominant. P-values ≤ 0.05 were deemed statistically significant. Statistical models are adjusted for baseline age.