Table 3.

Correlation of motor phenotypes with age and sex: binary logistic regression analysis.

Motor Phenotype	Factor	Level	OR (95% CI)	p Value
Bulbar (n = 455)	Sex, female		1.45 (1.13–1.87)	0.004
	Age	<50 years	1
		50–65 years	1.50 (0.082–2.76)	0.189
		65–80 years	2.29 (1.37–3.83)	0.002
		>80 years	3.14 (1.79–5.51)	<0.001
	Age x sex		1.08 (0.65–1.81)	0.758
Classic (n = 567)	Sex, male		1.34 (1.05–1.72)	0.019
	Age	<50 years	1
		50–65 years	0.61 (0.37–1.01)	0.054
		65–80 years	0.58 (0.39–0.85)	0.006
		>80 years	0.35 (0.22–0.56)	<0.001
	Age x sex		1.25 (0.79–2.00)	0.341
Flail arm (n = 63)	Sex, male		1.56 (0.80–3.04)	0.189
	Age	<50 years	1
		50–65 years	4.60 (0.92–23.02)	0.063
		65–80 years	2.49 (0.59–10.53)	0.216
		>80 years	1.45 (0.28–0.63)	0.659
	Age x sex		0.65 (0.22–1.88)	0.425
Flail leg (n = 120)	Sex, male		1.54 (0.97–2.46)	0.068
	Age	<50 years	1
		50–65 years	1.47 (0.58–3.70)	0.414
		65–80 years	0.95 (0.46–1.99)	0.903
		>80 years	1.02 (0.43–2.40)	0.960
	Age x sex		0.72 (0.32–1.65)	0.443
UMNp (n = 79)	Sex, male		0.67 (0.38–1.16)	0.155
	Age	<50 years	1
		50–65 years	0.49 (0.21–1.179	0.110
		65–80 years	0.36 (0.19–0.71)	0.003
		>80 years	0.17 (0.06–0.51)	0.001
	Age x sex		0.97 (0.36–2.59)	0.955
Respiratory (n = 30)	Sex, male		1.84 (0.78–4.31)	0.161
	Age	<50 years	1
		50–65 years	3.39 (0.29–39.91)	0.331
		65–80 years	6.40 (0.86–47.64)	0.070
		>80 years	n.o.
	Age x sex		0.59 (0.08–4.32)	0.604

OR: odds ratio; UMNp: upper motor neuron predominant; n.o.: no observations.