Table 2.
The Numbers and the Reasons that Contribute to False-Positive Subjects.
| Time Frame of EMR Data | FP Subjects, No. | Missing T1DM Diagnosis Codes, No. (%) | |||
|---|---|---|---|---|---|
| Case | 2007 (1 yr) | 881 | 881 (100) | ||
| 2006–2007 (2 yrs) | 914 | 914 (100) | |||
| 2005–2007 (3 yrs) | 908 | 908 (100) | |||
| 2004–2007 (4 yrs) | 723 | 723 (100) | |||
| 2003–2007 (5 yrs) | 435 | 435 (100) | |||
| 2002–2007 (6 yrs) | 317 | 317 (100) | |||
| 2001–2007 (7 yrs) | 244 | 244 (100) | |||
| 2000–2007 (8 yrs) | 198 | 198 (100) | |||
| 1999–2007 (9 yrs) | 115 | 115 (100) | |||
| 1998–2007 (10 yrs) | 13 | 13 (100) | |||
|
| |||||
| Time Frame of EMR Data | FP Subjects, No. | Missing Diabetes Diagnosis Codes, No. (%) | Missing Use History of DM-Related Medications or Supplies, No. (%) | Missing Prior Abnormal Laboratory Reports, No. (%) | |
|
| |||||
| Control | 2007 (1 yr) | 4690 | 2263 (48) | 24 (0.5) | 2403 (51) |
| 2006–2007 (2 yrs) | 4752 | 2039 (43) | 21 (0.4) | 2692 (57) | |
| 2005–2007 (3 yrs) | 4172 | 1767 (42) | 16 (0.4) | 2389 (57) | |
| 2004–2007 (4 yrs) | 3716 | 1625 (44) | 9 (0.2) | 2082 (56) | |
| 2003–2007 (5 yrs) | 3175 | 1408 (44) | 6 (0.2) | 1761 (55) | |
| 2002–2007 (6 yrs) | 2638 | 1168 (44) | 5 (0.2) | 1465 (56) | |
| 2001–2007 (7 yrs) | 1474 | 317 (22) | 4 (0.3) | 1153 (78) | |
| 2000–2007 (8 yrs) | 933 | 115 (12) | 1 (0.1) | 817 (88) | |
| 1999–2007 (9 yrs) | 569 | 38 (7) | 0 (0) | 531 (93) | |
| 1998–2007 (10 yrs) | 283 | 16 (6) | 0 (0) | 267 (94) | |
Abbreviations: DM, diabetes mellitus; EMR, electronic medical record; FP, false-positive; T1DM, type 1 diabetes mellitus.