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Table 1—

Significant group differences on measures of general intelligence 6 years after onset of diabetes

MeasureType 1 diabetes
Control subjects
Significance
nScorenScoreGroupGroup × age at onset
Verbal IQ       
 All 90 97.4 (1.5) 84 103.2 (1.5) P < 0.01 NS 
 Onset <4 years 24 98.4 (2.5) 27 106.6 (2.4) P < 0.01 NS 
 Onset >4 years 66 96.2 (1.5) 57 99.7 (1.7) P < 0.01 NS 
Performance IQ       
 All 89 103.6 (1.8) 83 106.8 (1.8) NS NS 
 Onset <4 years 24 103.2 (3.1) 27 107.2 (2.9) NS NS 
 Onset >4 years 65 104.1 (1.9) 56 106.4 (2.0) NS NS 
Full-scale IQ       
 All 89 100.2 (1.6) 83 105.3 (1.5) P < 0.05 NS 
 Onset <4 years 24 100.5 (2.7) 27 107.3 (2.6) P < 0.05 NS 
 Onset >4 years 65 99.9 (1.6) 56 103.2 (1.8) P < 0.05 NS 
MeasureType 1 diabetes
Control subjects
Significance
nScorenScoreGroupGroup × age at onset
Verbal IQ       
 All 90 97.4 (1.5) 84 103.2 (1.5) P < 0.01 NS 
 Onset <4 years 24 98.4 (2.5) 27 106.6 (2.4) P < 0.01 NS 
 Onset >4 years 66 96.2 (1.5) 57 99.7 (1.7) P < 0.01 NS 
Performance IQ       
 All 89 103.6 (1.8) 83 106.8 (1.8) NS NS 
 Onset <4 years 24 103.2 (3.1) 27 107.2 (2.9) NS NS 
 Onset >4 years 65 104.1 (1.9) 56 106.4 (2.0) NS NS 
Full-scale IQ       
 All 89 100.2 (1.6) 83 105.3 (1.5) P < 0.05 NS 
 Onset <4 years 24 100.5 (2.7) 27 107.3 (2.6) P < 0.05 NS 
 Onset >4 years 65 99.9 (1.6) 56 103.2 (1.8) P < 0.05 NS 

Data are adjusted least-square means (SE).

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