Table 1.

Descriptive Information for ALSPAC Subjects Included in the PD and PE Studies

	Psychotic Disorder (PD) Discovery Analysis		Psychotic Experiences (PE) Verification Analysis
	Cases	Controls	Cases	Controls
Number	37	38	40	66
Gender	29F, 8M	28F, 10M	22F, 18M	27F, 39M
BMI at age 11, Mean (SD)	18.24 (3.39)	18.066 (2.69)	18.12 (2.72)	17.75 (2.52)
Ethnicity	28 W, 3 NW, 6 NA	37 W, 1 NA	37 W, 1 NW, 2 NA	63 W, 0 NW, 3 NA
PLIKS at age 12	20 none, 8 suspected, 9 definite	38 none	40 none	60 none, 6 NA
PLIKS at age 18	37 definite clinical	None	29 = definite nonclinical, 11 = sleep/fever	66 none

Note: For gender: F, female; M, male. Body mass index (BMI) at age 12 is reported, where missing BMI variables were replaced with the mean according to gender. For ethnicity: W, white; NW, non-white; NA, missing. PLIKS at age 12 and age 18 are reported, however, in this analyses, we used PLIKS at age 18 as the main outcome measure for our proteomic analysis.