Table 4 The result of the evaluation of candidate case definitions for type 1 diabetes
Case definition | N (%)e | Performance values (95% CI) | ||
|---|---|---|---|---|
Sensitivity | PPV | F-score | ||
1. â‘ ICD10 code of E10a | 305 (0.268) | 32.9 (28.4, 37.2) | 33.3 (28.0, 38.4) | 0.331 (0.285, 0.373) |
2. â‘¡ Claims code of injector needlesb | 154 (0.135) | 32.3 (27.9, 36.6) | 64.8 (58.9, 70.6) | 0.431 (0.382, 0.475) |
3. â‘¢ Claims codes of basal insulinc | 1392 (1.224) | 40.2 (36.1, 44.5) | 8.9 (7.6, 10.3) | 0.146 (0.126, 0.166) |
4. â‘£ Claims codes of syringe pumpd | 14 (0.012) | 3.9 (1.9, 6.0) | 86.2 (68.0, 99.0) | 0.075 (0.037, 0.112) |
5. â‘ as well as â‘¡ | 73 (0.064) | 21.4 (17.0, 25.4) | 90.4 (85.0, 94.8) | 0.346 (0.286, 0.399) |
6. â‘ as well as â‘¢ | 136 (0.120) | 25.9 (21.7, 30.1) | 58.8 (51.0, 66.2) | 0.360 (0.307, 0.411) |
7. â‘ as well as â‘£ | 12 (0.011) | 3.6 (1.7, 5.5) | 92.2 (79.0, 99.4) | 0.069 (0.034, 0.103) |
8. â‘ as well as (â‘¢ or â‘£) | 138 (0.121) | 26.4 (22.0, 30.5) | 58.9 (51.0, 66.2) | 0.364 (0.310, 0.414) |
9. â‘ as well as (â‘¡ or â‘£) | 81 (0.071) | 23.7 (19.5, 27.9) | 90.2 (85.2, 94.4) | 0.375 (0.319, 0.427) |
10. â‘ as well as (â‘¡ or â‘¢) | 136 (0.120) | 25.9 (21.7, 30.1) | 58.8 (51.0, 66.2) | 0.360 (0.307, 0.411) |
11. â‘ as well as (â‘¡ or â‘¢ or â‘£) | 136 (0.120) | 26.4 (22.0, 30.5) | 58.9 (51.0, 66.2) | 0.364 (0.310, 0.414) |