Table 1 Main demographic characteristics of the population of patients aged over 18 years in primary care centers and of sample
N (%) | Age (years) median (IQR) | Age ≥ 70 years (%) | Female sex (%) | |
|---|---|---|---|---|
Patients with diagnostic code for atrial fibrilation (CIAP K-78) | 116,790 (2.32) | 79.04 (70.32–85.34) | 75.76 | 49.55 |
Sample of patients with diagnosis code of atrial fibrillation (sample 1) | 418 (0.36) | 78.69 (70.94–84.73) | 77.75 | 49.76 |
− Correct diagnosis (TP) | 407 (97.37) | 78.96 (71.09–84.77) | 78.62 | 50.37 |
− Incorrect diagnosis (FP) | 11 (2.63) | 69.97 (45.07–74.06) | 45.45 | 27.27 |
Patients without diagnostic code for atrial fibrillation (K-78) | 4,924,198 (97.68) | 47.18 (36.48–60.87) | 13.89 | 52.72 |
Sample of patients without diagnosis code of atrial fibrillation (sample 2) | 419 (0.01) | 78.40 (70.87–84.66) | 77.09 | 49.16 |
− Correct diagnosis (TN) | 410 (97.85) | 77.37 (70.83–84.57) | 76.83 | 49.02 |
− Incorrect diagnosis (FN) | 9 (2.15) | 85.38 (81.37–88.52) | 55.56 | 88.89 |