Table 4.

Families with first degree relatives affected by psychiatric illnesses

	Families of Sample 1		Families of Sample 2		Families of Sample 3		Families of Sample 4
	n=87		n=84		n=32		n=76
Diagnosis	A	%	A	%	A	%	A	%
Schizophrenia	3	3.4	2	2.4	5	15.6	9	11.8
Bipolar Disorder	3	3.4	6	7.1	3	9.4	12	15.8
Depression	17	19.5	23	27.4	7	21.9	22	29.0
Drug Abuse	11	12.6	30	35.7	7	21.9	16	21.1

A is number of affected families; % is percentage of affected families

Significant between sample comparisons:

Samples 1 vs 2: Drug Abuse X²= 12.75, p<.001

Samples 1 vs 3: Schizophrenia p= .03

Samples 1 vs 4: Schizophrenia p< .001; Bipolar p= .001

Samples 2 vs 3: Schizophrenia p= .02

Samples 2 vs 4: Schizophrenia p= .02; Drug Abuse X²= 4.19, p= .04