Variable | Total | Early-period Group | Later-period Group | OR | 95% CI | P | |
---|---|---|---|---|---|---|---|
N = 313 | N = 97 | N = 216 | Lower | Upper | |||
Vegetation | |||||||
 No vegetation | 39 (12.5) | 6 (6.2) | 33 (15.3) | 2.735 | 1.106 | 6.764 | 0.024 |
 Left cardiac valve | 199 (63.6) | 60 (61.9) | 139 (64.4) | 1.113 | 0.678 | 1.827 | 0.671 |
 Mitral valve | 105 (33.5) | 30 (30.9) | 75 (34.7) | 1.188 | 0.711 | 1.986 | 0.511 |
 Aortic valve | 72 (23.0) | 23 (23.7) | 49 (22.7) | 0.944 | 0.536 | 1.663 | 0.842 |
 Mitral and aortic valve | 22 (7.0) | 7 (7.2) | 15 (6.9) | 0.959 | 0.378 | 2.434 | 0.931 |
 Right cardiac valve | 60 (19.2) | 25 (25.8) | 35 (16.2) | 0.557 | 0.311 | 0.996 | 0.047 |
 Tricuspid valve | 56 (17.9) | 24 (24.7) | 32 (14.8) | 0.529 | 0.292 | 0.959 | 0.034 |
 Pulmonary valve | 4 (1.3) | 1 (1.0) | 3 (1.4) | 1.352 | 0.139 | 13.166 | 0.777 |
 Both left and right cardiac valve | 9 (2.9) | 2 (2.1) | 7 (3.2) | 1.591 | 0.324 | 7.802 | 0.833 |
 Peripheral abscess | 14 (4.5) | 5 (5.2) | 9 (4.2) | 0.800 | 0.261 | 2.453 | 0.924 |
 Severe regurgitation | 190 (60.7) | 57 (58.8) | 133 (61.6) | 1.124 | 0.690 | 1.833 | 0.638 |