Table 1 Year of diagnosis and sex-specific number of patients with Crohn’s disease and ulcerative colitis in Taiwan, 1998-2008

Crohn’s disease

1998

25

13

38

1.9

1999

18

10

28

1.8

2000

22

10

32

2.2

2001

28

12

40

2.3

2002

27

9

36

3

2003

26

17

43

1.5

2004

37

15

52

2.5

2005

33

15

48

2.2

2006

32

16

48

2

2007

31

14

45

2.2

2008

41

15

56

2.7

Ulcerative colitis

1998

69

49

118

1.4

1999

91

44

135

2.1

2000

78

42

120

1.9

2001

82

37

119

2.2

2002

113

76

189

1.5

2003

123

72

195

1.7

2004

100

69

169

1.4

2005

136

85

221

1.6

2006

116

85

201

1.4

2007

119

74

193

1.6

2008

123

95

218

1.3