Table 4 Reclassification in predicted risk of methicillin-resistant Staphylococcus aureus carriage between models
Stepwise model | Best BMA model | BMA model | Simple model | ||||||
|---|---|---|---|---|---|---|---|---|---|
Frequency (Row %) | <4% | ≥4% | Total | <4% | ≥4% | Total | <4% | ≥4% | Total |
Patients who screened MRSA positive | |||||||||
<4% | 13 (68.4) | 6 (31.6) | 19 | 16 (84.2) | 3 (15.8) | 19 | 16 (84.2) | 3 (15.8) | 19 |
≥4% | 2 (6.7) | 28 (93.3) | 30 | 2 (6.7) | 28 (93.3) | 30 | 0 (0) | 30 (100) | 30 |
Total | 15 | 34 | 49 | 18 | 31 | 49 | 16 | 33 | 49 |
Patients who screened MRSA negative | |||||||||
<4% | 852 (89.7) | 98 (10.3) | 950 | 917 (96.5) | 33 (3.5) | 950 | 915 (96.3) | 35 (3.7) | 950 |
≥4% | 56 (12.4) | 396 (87.6) | 452 | 53 (11.7) | 399 (88.3) | 452 | 41 (9.1) | 411 (90.9) | 452 |
Total | 908 | 494 | 1,402 | 970 | 432 | 1,402 | 956 | 446 | 1,402 |
NRI (95% CI) | 5.2% (−6.3%-16.6%) P = .376 | 5.6% (−3.4%-14.6%) P = .222 | 6.6% (−0.5%-13.6%) P = .068 | ||||||