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Table 1.

Characteristics of the Participants in the Successfully Scanned Comparison and Early Intervention Groups

VariableComparison GroupEarly Intervention Group
Maternal Characteristics at Enrollment 
Maternal educational attainment 10.50 (2.04) y 10.46 (1.53) y 
Maternal IQ 85.5 (9.64) 84.62 (9.02) 
Maternal age at birth 21.28 (6.91) y 18.72 (2.42) y 
  
Participant Characteristics at Enrollment 
Sex 15/29, 52% male 9/18, 50% male 
Race/ethnicity 18/18, 100% AA 29/29, 100% AA 
High-risk index (see Methods) 19.83 (5.42) 19.93 (5.91) 
Gestational age at birth 39.44 (3.52) wks 39.32 (2.50) wks 
Head circumference at birth 34.06 (2.21) cm 34.33 (1.52) cm 
  
Participant Characteristics at Time of Scan 
Age at scan 41.22 (1.67) y 41.38 (1.57) y 
SAI status 9/18, 50% SAI 15/29, 52% SAI 
VariableComparison GroupEarly Intervention Group
Maternal Characteristics at Enrollment 
Maternal educational attainment 10.50 (2.04) y 10.46 (1.53) y 
Maternal IQ 85.5 (9.64) 84.62 (9.02) 
Maternal age at birth 21.28 (6.91) y 18.72 (2.42) y 
  
Participant Characteristics at Enrollment 
Sex 15/29, 52% male 9/18, 50% male 
Race/ethnicity 18/18, 100% AA 29/29, 100% AA 
High-risk index (see Methods) 19.83 (5.42) 19.93 (5.91) 
Gestational age at birth 39.44 (3.52) wks 39.32 (2.50) wks 
Head circumference at birth 34.06 (2.21) cm 34.33 (1.52) cm 
  
Participant Characteristics at Time of Scan 
Age at scan 41.22 (1.67) y 41.38 (1.57) y 
SAI status 9/18, 50% SAI 15/29, 52% SAI 

AA = African American; SAI = School Age Intervention.

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