Table 4.
Patient characteristics according to groups
| Variables | Group 1 (RIA‐positive and ELISA‐positive) | Group 2 (RIA‐positive and ELISA‐negative) | Group 3 (RIA‐negative and ELISA‐positive) | Group 4 (RIA‐negative and ELISA‐negative) | F‐value |
|---|---|---|---|---|---|
| n | 39 | 6 | 8 | 25 | – |
| Age (years) | 52.7 (16.6) | 64.8 (15.3) | 60.8 (19.4) | 55.1 (15.3) | 0.281 |
| BMI (kg/m2) | 22.9 (3.2) | 24.1 (2.2) | 22.0 (3.7) | 21.9 (3.0) | 0.349 |
| Diabetes duration (years) | 11.3 (8.5)** | 21.8 (8.4) | 20.6 (14.1) | 19.6 (12.6) | 0.005 |
| HbA1c (%) | 7.5 (1.0) | 8.3 (0.6) | 7.6 (1.0) | 7.8 (1.0) | 0.296 |
Data are presented as a number, percent and mean (SD). **P < 0.05 (vs group 4). BMI, body mass index; ELISA, enzyme‐linked immunosorbent assay; HbA1c, hemoglobin A1c; RIA, radioimmunoassay.