Table 2 Demographic characteristics and number of heart valve operations
From: Association of inflammatory gene polymorphisms with mechanical heart valve reoperation
Characteristics | Patient number or mean ± SD | p value | |
|---|---|---|---|
Number of heart valve operations | |||
1 | ≥2 | ||
Operation | 189 | 39 | |
Time after first operation (years) | 16 ± 7 | 23 ± 9 | 0.002 |
Age | 58 ± 10 | 57 ± 10 | 0.333 |
Age at first operation | 43 ± 11 | 45 ± 11 | 0.476 |
Gender | |||
Male | 71 | 8 | 0.042 |
Female | 118 | 31 | |
Body mass index (kg/m2) | 22.84 ± 2.77 | 21.70 ± 2.99 | 0.023 |
Time in therapeutic range on warfarin | |||
<60 % | 132 | 27 | 0.866 |
≥60 % | 55 | 12 | |
Valve position | |||
Aortic | 52 | 5 | 0.001 |
Mitral | 90 | 23 | |
Doublea | 38 | 3 | |
Tricuspidb | 9 | 8 | |
Comorbidity | |||
Hypertension | |||
Absent | 139 | 30 | 0.661 |
Present | 50 | 9 | |
Diabetes mellitus | |||
Absent | 174 | 34 | 0.326 |
Present | 15 | 5 | |
Congestive heart failure | |||
Absent | 146 | 34 | 0.166 |
Present | 43 | 5 | |
Atrial fibrillation | |||
Absent | 85 | 13 | 0.181 |
Present | 104 | 26 | |
Myocardial infarction | |||
Absent | 84 | 17 | 1.000 |
Present | 105 | 22 | |