Table 3 Positive predictive values for each skin and soft tissue infection identification algorithm
Initial visits | All visits | |||
|---|---|---|---|---|
SSTI identification criteria | True positives/encounters | PPV (95% CI) | True positives/encounters | PPV (95% CI) |
ICD-9 or CPT code or positive culture | 413/514 | 80.4 (76.9-83.8) | 617/731 | 84.4 (81.8-87.0) |
ICD-9 SSTI code only | 404/455 | 88.8 (85.9-91.7) | 607/669 | 90.7 (88.5-92.9) |
Cellulitis/Abscess ICD-9 code | 228/254 | 89.8 (086.0-93.5) | 410/448 | 91.5 (88.9-94.1) |
Cellulitis/Abscess ICD-9 code, body site specific | 116/214 | 54.2 (47.5-60.9) | 204/388 | 52.6 (47.6-57.6) |