Table 4.

Correlations Between Confounder/Mediator Variables and Motor Outcomes

Gross Motor DMQFine Motor DMQ
Maternal age−0.16* −0.14*
Prenatal visits0.14# 0.16*
Maternal education0.14# 0.13#
Cigarettes
 Month before−0.15−0.12
 1st Trimester−0.13−0.16
 2nd Trimester−0.18# −0.20#
 3rd Trimester−0.18# −0.18#
 Total−0.18# −0.17
Alcohol
 Month before−0.27** −0.11
 1st Trimester−0.24* −0.12
 2nd Trimester−0.14−0.04
 3rd Trimester−0.13−0.06
 Total−0.22* −0.10
Marijuana§
 Month before−0.00−0.07
 1st Trimester−0.04−0.08
 2nd Trimester−0.02−0.06
 3rd Trimester0.02−0.05
 Total−0.01−0.07
Cocaine
 Month before−0.16−0.20#
 1st Trimester−0.24* −0.24*
 2nd Trimester−0.12−0.18
 3rd Trimester−0.14−0.13
 Total−0.23* −0.23*
Gestational age0.14* 0.16*
Birth weight0.17* 0.19**
Birth length0.16* 0.16*
Head circumference0.060.16*
  • # P < .10;

  • * P < .05;

  • ** P < .01.

  • Number of cigarettes per day.

  • Number of ounces absolute alcohol per week.

  • § Number of marijuana cigarettes per week.

  • Number of rocks per week.