Table 2.

Correlations between metabolic index and patient information collected at the time of metabolic assessment

Characteristic at time of metabolic assessment	Pearson correlation, r	P values*
Demographics
Age (years)	−0.19 (−0.4 to 0.07)	0.16
BMI	0.16 (−0.11 to 0.40)	0.24
Fat mass (%)	0.11 (−0.15 to 0.36)	0.39
Fat-free mass (kg)	0.02 (−0.24 to 0.28)	0.87
Time since onset (months†)	0.03 (−0.23 to 0.29)	0.81
Diagnostic delay (months)	−0.05 (−0.22 to 0.30)	0.74
Clinical scores
ALSFRS-R	−0.08 (−0.33 to 0.18)	0.56
FVC, % of predicted	0.16 (−0.20 to 0.49)	0.37
UMN score	0.05 (−0.22 to 0.32)	0.69
LMN score†	0.47 (0.23 to 0.65)	<0.01
Cognitive indices
ECAS total score (n=24)	0.20 (−0.22 to 0.56)	0.34
ACE III total score (n=38)	0.41 (0.10 to 0.64)	0.01

Data presented as mean (range).

*P value is based on Pearson correlation.

†Log-transformed value.

ACE III, Addenbrooke’s Cognitive Examination III, data corrected for items administered; ALSFRS-R, ALS Functional Rating Scale-Revised; BMI, body mass index; ECAS, Edinburgh Cognitive and Behavioural ALS Screen; FVC, forced vital capacity; LMN, lower motor neuron; UMN, upper motor neuron.