Table 1

Characteristics of the TrialNet cohort at time of initial Ab screen

CharacteristicAb (−) at initial screeningAb (+) at initial screeningP value
Total (n)31,0381,807
Age at initial screen (median [Q1–Q3])9.2 (5.4–12.8)9.1 (6.0–12.4)0.5511
Sex (% female)50490.1985
Race/ethnicity (%)<0.0001
 White7275
 Hispanic1611
 Black23
 Other33
 Unknown78
Relationship to index patient with type 1  diabetes (%)<0.0001
 Sibling5664
 Offspring2323
 Other relative2113