Cognition, Behavior, and Respiratory Function in Amyotrophic Lateral Sclerosis

Table 1

Comparison of demographic variables between respiratory groups.

Variable	Intact respiration	Impaired respiration	P value
Age (yrs)	55.9 (11.9)	59.7 (11.1)	0.28
Education (yrs)	14.6 (2.62)	14.2 (2.12)	0.55
ALSFRS-R total score	41.7 (5.24)	37.8 (8.22)	0.12
Gender (% Male)	11 (55.0%)	11 (45.8%)	0.55
Race (%)
Caucasian	17 (85.0%)	20 (83.3%)	0.67
Hispanic	1 (5.00%)	2 (8.30%)
African American	2 (10.0%)	1 (4.20%)
Other	—	1 (4.20%)
Site of onset (%)
Bulbar	6 (30.0%)	8 (33.3%)	0.81
Limb	14 (70.0%)	16 (66.7%)

Note: mean (SD) and frequencies (%) are given for each variable. t-tests and chi-squares were calculated for continuous (age, education, and ALS-FRS-R) and categorical variables (gender, race, and site of onset), respectively. Abbreviations are as follows: ALSFRS-R: amyotrophic lateral sclerosis functional rating scale-revised.