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. Author manuscript; available in PMC: 2008 Apr 29.
Published in final edited form as: Neurotoxicol Teratol. 2007 Oct 3;30(1):20–28. doi: 10.1016/j.ntt.2007.09.005

Table 6.

Regression Models Predicting Quality of Movement and Stress Abstinence (N=166)

Quality of Movement Stress Abstinence
Model Unstandardized Coefficient (SE) βa P R2 Unstandardized Coefficient (SE) β P R2
Meth Use Frequency (# of days per week) 0.254 0.244
 1st Trimester: 0.01 (0.01) 0.04 .716 0.01 (0.00) 0.22* .025
 2nd Trimester: −0.01 (0.05) −0.02 .833 −0.00 (0.01) −0.06 .591
 3rd Trimester: 0.12 (0.06) 0.21* .035 0.00 (0.01) 0.07 .498
Birth weight in 100g 0.03 (0.01) 0.25* .002 0.00 (0.00) 0.00 .982
Marijuana Use: # of joints per day −0.03 (0.04) −0.05 .475 −0.00 (0.00) −0.02 .791
Alcohol Use: # of absolute alcohol per day −0.23 (0.30) −0.06 .438 −0.04 (0.03) −0.09 .226
Tobacco Use: # of cigarettes per day 0.00 (0.01) 0.04 .655 0.00 (0.00) 0.03 .679
SES (Hollingshead Index) 0.00 (0.01) 0.03 .682 0.00 (0.00) 0.04 .618
>5 days Postpartum 0.20 (0.23) 0.07 .369 −0.02 (0.02) −0.05 .500
First born 0.22 (0.07) 0.17* .023 0.00 (0.01) 0.01 .849
Site Iowa vs others 0.06 (0.14) 0.04 .670 −0.02 (0.01) −0.10 .256
Site Oklahoma vs others 0.19 (0.07) 0.23* .008 −0.02 (0.01) −0.19 .028
Site Hawaii vs others −0.06 (0.11) −0.05 .587 −0.06 (0.01) −0.49** .000
a

Standardized Regression Coefficient

*

P<0.05

**

P< .01