Table 4.
Results of telephone interview and chart review in AA
| Nontrait | SCT | Hemoglobin C Trait | P Value Comparing SCT and Nontrait | |
|---|---|---|---|---|
| N | 245 | 110 | 21 | |
| Participated in telephone interview (%) | 73.1 | 77.3 | 61.9 | 0.40 |
| Duration of diabetes (years) | 11.1 ± 7.5 | 9.41 ± 11.1 | 11.0 ± 9.8 | 0.16 |
| Percent requiring insulin | 62.0 | 50.9 | 61.9 | 0.05 |
| Percent diagnosed with type 1 diabetes | 9.0 | 7.3 | 0 | 0.60 |
| Percent knowing SCT status | 17.2% | 43.8% | 60% | 0.0001 |
| Proportion of relatives with sickle cell disease (%) | 15.7 | 31.8 | 40.0 | 0.02 |
| Retinopathy (%) | 30.6 | 17.3 | 33.3 | 0.008 |
| ESRD (%) | 11.8 | 8.2 | 0 | 0.30 |
| Laser surgery (%) | 13.9 | 10.9 | 9.5 | 0.43 |
| Blindness in one or both eyes (%) | 6.1 | 3.6 | 4.8 | 0.34 |
| Toe amputation (%) | 6.94 | 4.55 | 4.8 | 0.39 |
| Foot or leg amputation (%) | 4.9 | 2.7 | 4.8 | 0.35 |
| Retinopathy or amputation or dialysis (%) | 36.3 | 22.7 | 33.3 | 0.01 |
| Gout (%) | 12.2 | 10.9 | 14.3 | 0.72 |