Table 3 Comparison of acute cystitis decision aid performance in the development [8] and validation cohorts of women with acute cystitis
Outcome | Development Cohort [8] (2002) | Validation Cohort (2009–2011) | Absolute Difference | p-value* |
|---|---|---|---|---|
Number of Family Physicians | 205 | 230 | – | – |
Women with complete data | 331 | 397 | – | – |
Prevalence of positive cultures | 208/331 (62.8%) | 245/397 (61.7%) | - 1.1% | 0.76 |
1. Accuracy | ||||
Sensitivity | 167/208 (80.3%) | 202/245 (82.5%) | + 2.1% | 0.54 |
Specificity | 66/123 (53.7%) | 54/152 (35.5%) | - 18.2% | 0.005 |
2. Management | ||||
Urine Cultures | 107/331 (32.3%) | 97/397 (24.4%) | - 7.9% | 0.02 |
Antibiotics Prescribed | 224/331 (67.7%) | 300/397 (75.6%) | + 7.9% | 0.02 |
Unnecessary Antibiotics** | 57/331 (17.2%) | 98/397 (24.7%) | + 7.5% | 0.02 |