Table 3. Clustering of Neuropsychiatric Conditions in Kindreds of Patients With ALS Compared With Those of Controls.

Affected Individuals per Kindred, No.	Kindreds, No.
	Of Cases (n = 127)	Of Controls (n = 132)
0	50	81
1	32	31
2	16	14
≥3	29	6

Abbreviation: ALS, amyotrophic lateral sclerosis.