Table 2.
Random sample of patients with possible T2DM by computable phenotype (CP) and site at selected health care systems in PCORnet, 2012-2016
| Total Reviewed | Patients with confirmed T2DM (n=1,512) | Patients without confirmed T2DM (n=60) | |||||
|---|---|---|---|---|---|---|---|
| N | PPV1 (95% CI2) | Did not meet ≥ 2 Diabetes criteria3 | Type 1 diabetes, gestational diabetes or prediabetes | ||||
| Overall | 1572 | 1512 | 96.2 | (95.1, | 97.0) | 52 | 8 |
| By computable phenotype | |||||||
| CP1 - Diabetes diagnosis and medication use | 1124 | 1084 | 96.4 | (95.2, | 97.4) | 37 | 3 |
| CP2 - Diabetes diagnosis and HbA1c ≥6.5% | 432 | 415 | 96.1 | (93.8, | 97.5) | 13 | 4 |
| CP3 - HbA1c ≥6.5% and medication use | 16 | 13 | 81.3 | (57.0, | 93.4) | 2 | 1 |
| By site | |||||||
| Vanderbilt University Health System | 398 | 379 | 95.2 | (92.7, | 96.9) | 18 | 1 |
| OneFlorida | 391 | 382 | 97.7 | (95.7, | 98.8) | 8 | 1 |
| University of North Carolina | 396 | 380 | 96.0 | (93.5, | 97.5) | 15 | 1 |
| Tulane | 387 | 371 | 95.9 | (93.4, | 97.4) | 11 | 5 |
1
PPV: Positive predictive value
2
Confidence interval using Wilson’s formula
3
Criteria included evidence of a diabetes diagnosis, diabetes medication use or elevated HbA1c ≥6.5%