Table 2B.

Multivariable^* associations between externality and sFMQ score (0–26).

Timepoint of sMFQ data collection (years)	11			12			13			14			16			22
	β	95% CI	p	β	95% CI	p	β	95% CI	p	β	95% CI	p	β	95% CI	p	β	95% CI	p
ALSPAC
Sample size n	3,810						2,725			2,150			3,156			1,996/1,900
Externality @ 8	0.14	0.07–0.21	≤0.0001				0.080	−0.02–0.17	0.100	0.13	0.004–0.225	0.43	0.13	0.03–0.22	≤0.0001	0.11	−0.01–0.230	0.071
Externality @ 16																0.58	0.46-0.70	≤0.0001
TTC
Sample size n				2,250						1,888
Externality @ 10				0.34	0.24–0.44	≤0.0001				0.20	0.08–0.31	0.001

Complete cases. Univariable results in Supplementary Table F.

^*Adjusted for sex, IQ at age 8, home ownership status, parental marital status, parental educational level, family income.