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. Author manuscript; available in PMC: 2012 Jan 1.

Published in final edited form as: Neurotoxicol Teratol. 2011 Jan–Feb;33(1):176–184. doi: 10.1016/j.ntt.2010.10.004

Table 6. Heavy MA use and PDMS-2 Gross, Fine and Total Motor Scores.

	Mean ± (SD)
	Heavy Use >=3 days per week	Some Use/No Use	Unadjusted P-Value	^aAdjusted P-Value

1 year	(N = 30)	(N=293)
Gross motor Quotient	103.63 ± 5.41	103.75 ± 6.60	0.916	0.651
	(N = 30)	(N=295)
Fine motor Quotient	104.07 ± 9.98	105.87 ± 10.11	0.353	0.122
Grasping	9.83 ± 1.66	10.51 ± 1.97	0.072	0.024^b
3 years	(N=26)	(N=234)
Gross motor Quotient	94.27 ± 8.75	95.02 ± 9.32	0.695	0.832
	(N=27)	(N=251)
Fine motor Quotient	96.44 ± 7.16	98.94 ± 12.17	0.297	0.436
Grasping	9.37 ± 1.67	10.06 ± 2.48	0.158	0.099

^a

Adjusted for study site, birth weight, prenatal drug exposures, and socioeconomic status.

^b

Correction for multiple comparison tests P = 0.048.