Table 7.

Regression models predicting NNNS summary scores by trimester of MA use

	Frequency of MA use (# days per week)	Unstandardized coefficient (SE)	βa	P	R2
Lethargy	first trimester	0.010 (0.063)	0.008	0.878	0.037
	second trimester	0.016 (0.095)	0.010	0.868
	third trimester	0.330 (0.121)	0.142	0.006
Hypotonicity	first trimester	0.014 (0.012)	0.061	0.255	0.103
	second trimester	−0.023 (0.019)	−0.074)	0.209
	third trimester	0.051 (0.024)	0.108	0.032
Stress/abstinence	first trimester	0.003 (0.001)	0.113	0.026	0.188
	second trimester	−0.004 (0.002)	−0.103	0.067
	third trimester	0.001 (0.003)	−0.007	0.876
Physiological stress	first trimester	0.006 (0.002)	0.161	0.003	0.055
	second trimester	−0.005 (0.003)	−0.087	0.149
	third trimester	0.007 (0.004)	0.090	0.082
CNS stress (NZ only)	first trimester	0.008 (0.003)	0.210	0.016	0.200
	second trimester	−0.004 (0.005)	−0.066	0.455
	third trimester	−0.010 (0.007)	−0.112	0.170