Table 4.
Sensitivity, specificity, positive and negative predictive values of family history of diabetes, consanguinity, obesity and all their possible combinations.
| Selected social characteristics | Sensitivity % (95% CI) |
Specificity % (95% CI) |
Positive predictive value % (95% CI) |
Negative predictive value % (95% CI) |
| Family history of DM | 74.6 (69.0-79.6) | 32.1 (29.5-34.9) | 20.4 (19.2-21.7) | 84.4 (81.3-87.0) |
| Consanguinity | 34.8 (29.2-40.7) | 63.8 (61.0-66.6) | 18.3 (15.8-21.2) | 80.7 (79.2-82.1) |
| Obesity | 59.6 (53.5-65.4) | 56.3 (53.4-59.1) | 24.4 (22.2-26.6) | 85.5 (83.6-87.3) |
| Family history of DM with obesity | 46.0 (39.9-52.1) | 68.6 (65.8-71.3) | 25.7 (22.9-28.8) | 84.3 (82.7-85.8) |
| Consanguinity with obesity | 20.2 (15.6-25.5) | 84.6 (82.4-86.6) | 23.7 (19.1-28.9) | 81.8 (80.8-82.7) |
| Consanguinity with family history of DM | 26.5 (21.4-32.1) | 75.1 (72.5-77.5) | 19.9 (16.7-23.7) | 81.4 (80.2-82.5) |
| Consanguinity and family history of DM with Obesity. | 16.2 (12.0-21.1) | 88.6 (86.6-90.4) | 25.1 (19.7-31.5) | 81.7 (80.9-82.5) |