Budd-Chiari Syndrome in China: A Systematic Analysis of Epidemiological Features Based on the Chinese Literature Survey

Table 3

Total number of BCS cases reported by the end of 4 setting years.

Year	Number of provinces	Number of cases			Characteristics
		Total^†	Primary (retreated)^‡	Secondary	Male/female	Mean age (range) (years)
2010	29	15963	13340 (94)	26	7956/5298	35.6 (2–79)
2005	29	11798	9718 (47)	24	5910/3820	35.4 (2–79)
2000	28	5244	4893 (44)	11	3025/1879	33.5 (2–79)
1990	12	317	316 (7)	1	216/101	31.9 (11–62)

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.