Table 3.

Numbers of Offspring With and Without Schizophrenia Based on Parental Birth Places

Maternal and Paternal Birthplace		Schizophrenia		Adjusted Relative Riska	95% Confidence Interval	P Value
Maternal	Paternal	−	+
Israel	Israel	27 563	192	1
Israel	Other West Asia	4427	29	0.9	0.6–1.3	0.6
Israel	North Africa	2615	15	0.9	0.5–1.5	0.7
Israel	Europe, etc.	5580	41	1	0.7–1.4	1
Other West Asia	Israel	3231	28	1.1	0.7–1.6	0.8
Other West Asia	Other West Asia	11 721	88	0.8	0.6–1.1	0.2
Other West Asia	North Africa	843	5	0.7	0.3–1.8	0.5
Other West Asia	Europe, etc.	541	7	1.4	0.7–3.0	0.4
North Africa	Israel	2454	24	1.3	0.9–2.0	0.2
North Africa	Other West Asia	1374	6	0.6	0.3–1.3	0.2
North Africa	North Africa	13 040	110	1	0.7–1.2	0.8
North Africa	Europe, etc.	802	8	1.2	0.6–2.4	0.6
Europe, etc.	Israel	5158	29	0.8	0.6–1.2	0.3
Europe, etc.	Other West Asia	603	3	0.7	0.2–2.2	0.5
Europe, etc.	North Africa	726	3	0.6	0.2–1.9	0.4
Europe, etc.	Europe, etc.	7514	49	0.9	0.6–1.2	0.3

^aAdjusted for paternal and maternal age, maternal education, paternal social class, sex, and birth order.