Table 1.

Prevalences of Potential Confounders and Their Association With Nonaffective Psychoses, and Childhood Infection

		Nonaffective Psychosis HR (95% CI)	Childhood Infection OR (95% CI)	Prevalence (%)
Male sex		1.4 (1.3–1.4)	1.3 (1.3–1.3)	51
Born December–May		1.1 (1.0–1.1)	1.0 (0.9–1.0)	52
Urban birth		1.4 (1.3–1.5)	1.2 (1.2–1.3)	14
Parental migration		2.0 (1.8–2.1)	1.2 (1.2–1.2)	9
Parental age ≥35	Maternal	1.4 (1.3–1.5)	1.0 (1.0–1.0)	8
	Paternal	1.4 (1.3–1.5)	1.0 (1.0–1.0)	18
Parental psychiatric illness	Maternal	3.1 (2.9–3.4)	1.5 (1.5–1.5)	8
	Paternal	2.6 (2.4–2.8)	1.3 (1.2–1.3)	9
Socioeconomic status	Parent unemployed	2.4 (2.2–2.7)	1.3 (1.3–1.4)	3
	Household receiving social welfare benefits	1.5 (1.4–1.6)	1.1 (1.1–1.1)	35
Inpatient care with other diagnosesa		1.3 (1.2–1.4)	2.1 (2.1–2.1)	34
Maternal infection during pregnancy		1.6 (1.2–2.0)	1.8 (1.7–1.9)	0.9

Note: CI, confidence interval; HR, hazard ratio; OR, odds ratio.

^aHospital admission with all diagnoses except a diagnosis of infection or a psychiatric diagnosis.