Table 2.
Demographic data of children from the Autoimmunity Screening for Kids study with zinc transporter 8 autoantibody
| Group | RBA + ECL+ | RBA + ECL– | P |
|---|---|---|---|
| No. | 70 | 65 | – |
| Age at screening, y | 8.7 ± 4.0 | 9.7 ± 4.5 | .21 |
| Male sex, % | 54.3 | 49.2 | .61 |
| Family history of T1D, % | 25.7 | 15.4 | .14 |
| RBA-ZnT8 RBA levels, DK units | |||
| Median | 0.150 | 0.055 | < .001 |
| IQR | 0.071 ~ 0.420 | 0.042 ~ 0.095 | |
| Multiple IAbs positive, % | 85.9 (61/70) | 15.6 (10/65) | < .001 |
| GADA positivity, No. (%) | 51 (72.9) | 4 (6.2) | < .001 |
| IAA positivity, No. (%) | 42 (60.0) | 3 (4.6) | < .001 |
| IA-2A positivity, No. (%) | 45 (64.3) | 8 (12.3) | < .001 |
| Clinical T1D at follow-up, No. | 16 | 1 | < .001 |
Abbreviations: ASK, Autoimmunity Screening for Kids; ECL, electrochemiluminescence; GADA, glutamic acid decarboxylase; IAA, insulin autoantibodies; IA-2A, insulinoma-associated protein 2; IAbs, islet antibodies; IQR, interquartile range; RBA, radiobinding assay; T1D, type 1 diabetes.