|BCS: Budd-Chiari syndrome.|
†Total number is not equal to the sum of primary and secondary BCS cases because the detailed information is not reported in some cases.
‡Retreated cases refer to the primary BCS patients retreated and the articles reported that the sole retreated patients are excluded from our study. A few articles which reported both primary and secondary BCS patients or both initially treated and retreated patients were included regarding the number of the secondary BCS patients or the retreated patients which was small.
Sex data were not reported in some cases.