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Table 3

Overweight, obesity, and sum of skinfolds ≥90th percentile at age 2 years according to birth parameters

Overweight (BMI Z scores ≥85th percentile)Obesity (BMI Z scores ≥95th percentile)Sum of skinfolds ≥90th percentile
Birth weight category    
    SGA (<10th percentile) 31/117 (26.5) 14/117 (12.0) 9/108 (8.3) 
    Normal 325/935 (34.8) 149/935 (15.9) 82/859 (9.5) 
    LGA (≥90th percentile) 46/89 (51.7) 27/89 (30.3) 13/79 (16.5) 
    Ptrend <0.001 <0.001 0.09 
Sum of skin folds at birth    
    <25th percentile 88/275 (32.0) 39/275 (14.2) 20/256 (7.8) 
    25–74th percentile 173/547 (31.6) 77/547 (14.1) 41/502 (8.2) 
    ≥75th percentile 116/261 (44.4) 59/261 (22.6) 33/234 (14.1) 
    Ptrend 0.003 0.009 0.02 
Cord C-peptide    
    <25th percentile 97/285 (34.0) 47/285 (16.5) 27/254 (10.6) 
    25–74th percentile 151/435 (34.7) 73/435 (16.8) 30/392 (7.7) 
    ≥75th percentile 89/247 (36.0) 38/247 (15.4) 23/235 (9.8) 
    Ptrend 0.63 0.74 0.72 
Overweight (BMI Z scores ≥85th percentile)Obesity (BMI Z scores ≥95th percentile)Sum of skinfolds ≥90th percentile
Birth weight category    
    SGA (<10th percentile) 31/117 (26.5) 14/117 (12.0) 9/108 (8.3) 
    Normal 325/935 (34.8) 149/935 (15.9) 82/859 (9.5) 
    LGA (≥90th percentile) 46/89 (51.7) 27/89 (30.3) 13/79 (16.5) 
    Ptrend <0.001 <0.001 0.09 
Sum of skin folds at birth    
    <25th percentile 88/275 (32.0) 39/275 (14.2) 20/256 (7.8) 
    25–74th percentile 173/547 (31.6) 77/547 (14.1) 41/502 (8.2) 
    ≥75th percentile 116/261 (44.4) 59/261 (22.6) 33/234 (14.1) 
    Ptrend 0.003 0.009 0.02 
Cord C-peptide    
    <25th percentile 97/285 (34.0) 47/285 (16.5) 27/254 (10.6) 
    25–74th percentile 151/435 (34.7) 73/435 (16.8) 30/392 (7.7) 
    ≥75th percentile 89/247 (36.0) 38/247 (15.4) 23/235 (9.8) 
    Ptrend 0.63 0.74 0.72 

Data are n/total n (%). LGA, large for gestational age; SGA, small for gestational age.

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