Table 3. Age group of exposure to first pet cat by diagnostic group.

	Diagnostic Group	Schizophrenia	Bipolar Disorder	Control
		N = 396	N = 381	N = 594
Age of First Pet Cat
Present at Birth	Number	37	47	70
	%	9.34	12.34	11.78
After Birth through Age 3	Number	8	21	17
	%	2.02	5.51	2.86
Age 4–5	Number	24	27	33
	%	6.06	7.09	5.56
Age 6–8	Number	35	28	50
	%	8.84	7.35	8.42
Age 9–12	Number	35	34	36
	%	8.84	8.92	6.06
Any Before age 13	Number	139	157	206
	%	35.1	41.21	34.68
None before Age 13	Number	257	224	388
	%	64.9	58.79	65.32