Table 2.

Parameter estimates (mean, standard error, 2.5 percentile, 97.5 percentile) from WQS sex-stratified interaction regression across 100 holdout datasets. The slope associated with WQS is for males; the interaction between WQS and sex is the difference in slopes between boys and girls.

Parameter	Estimate	Std. Error	2.5%	97.5%
(Intercept)	88.700	4.530	80.700	96.700
WQS	−2.130	1.110	−4.270	−0.359
Female	−0.622	3.190	−5.740	5.630
MNI	0.073	0.027	0.018	0.118
Energy	0.000	0.001	−0.001	0.001
Mom Age (at birth)	−0.158	0.089	−0.324	0.004
Mom Weight	−0.098	0.029	−0.156	−0.040
Mom Educ	4.790	0.862	3.090	6.470
Mom IQ	0.158	0.026	0.104	0.205
Smoker	−2.100	1.320	−4.420	0.536
WQS:Female	1.980	1.640	−1.280	5.130