Table 5.

Variables Shown That Predict the Later Development of Autistic Symptoms That Survive FDR Correction in Both the Discovery and Test Sets Using the Six Most Common Covariates and the Global Severity Index (GSI)

Variable	Type of variable	Lowest to highest level	n	B	B int.	CIL	CIU	p FDR	p Bonf
Nervous, how often in the past month?	Ordered categorical	No/never to yes/always	934	0.084	0.56	0.044	0.123	0.001	0.006
My father praised me	Ordered categorical	Never to constantly	827	−0.086	−0.008	−0.13	−0.043	0.002	0.015
People in our family looked after each other	Ordered categorical	No/never to yes/always	885	−0.06	0.362	−0.09	−0.03	0.002	0.016
Someone in our family wanted me to achieve something	Ordered categorical	No/never to yes/always	888	−0.05	0.412	−0.081	−0.019	0.019	0.25
Someone in our family believed in me	Ordered categorical	No/never to yes/always	872	−0.047	0.322	−0.078	−0.016	0.026	0.44
I felt that I was loved	Ordered categorical	No/never to yes/always	887	−0.045	0.409	−0.075	−0.014	0.034	0.70
In general, how would you describe your health?	Ordered categorical	Poor to Excellent	928	−0.051	0.558	−0.089	−0.014	0.047	1
I felt that my father tried to comfort me	Ordered categorical	No/never to yes/always	808	−0.048	0.228	−0.083	−0.013	0.049	1

Notes: Variables that did not pass FDR correction in the Dutch only sample have been removed. All variables that survive FDR correction in the full cohort after correction for the six most common covariates and the GSI are presented in Table S4.

B int.: B intercept; CIL: lower confidence interval; CIU: upper confidence interval; p Bonf: Bonferroni corrected p‐value; p FDR: false discovery rate corrected p‐value.