Table 3 Discrepancy analyses between algorithm results and annotation results (reference), for false-negative and false-positive cases
All CVC-BSI cases | HA CVC-BSI cases | |||
|---|---|---|---|---|
Algorithm 1a | Algorithm 2b | Algorithm 1a | Algorithm 2b | |
Reasons false-negative cases | ||||
True negative case (reference incorrect) | 3 | 3 | 4 | 4 |
Relevant information stored as free text | 1 | – | 2 | 1 |
Algorithm rules missing/not matching clinical situation | 3 | 3 | 1 | 1 |
Total number of false-negative cases | 7 | 6 | 7 | 6 |
Reasons false-positive cases | ||||
True positive cases (reference incorrect) | 2 | 2 | – | – |
No symptoms present (contaminant BCx) | – | 1 | – | – |
Algorithm rules missing/not matching clinical situation | 1 | 1 | 1 | 1 |
Total number of false-positive cases | 3 | 4 | 1 | 1 |