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Table 1 Number of subjects and SMR1 of colon cancer and rectal cancer in 23 Prefectures, from northeastern to southwestern in order.

From: Dietary fiber showed no preventive effect against colon and rectal cancers in Japanese with low fat intake: an analysis from the results of nutrition surveys from 23 Japanese prefectures

Prefecture

No. of

Survey year

Col SMR

Rec SMR

 

Subjects

   

Hokkaido

950

1989

108.0

104.9

Aomori

1631

1991

118.9

119.7

Miyagi

162

1989

89.8

109.8

Akita

1254

1987

118.1

107.8

Yamagata

1698

1990

113.0

97.9

Fukushima

632

1990

96.4

107.0

Gunma

928

1990

88.9

87.2

Tokyo

1319

1991

116.1

109.9

Toyama

957

1990

101.4

84.9

Nagano

3057

1989

91.8

88.4

Yamanashi

1642

1989

72.8

100.2

Niigata

2290

1989

97.7

109.3

Fukui

212

1987

78.4

70.0

Ishikawa

849

1987

102.

79.8

Shizuoka

1367

1989

82.7

97.8

Aichi

484

1991

104.9

103.9

Mie

700

1988

81.6

89.1

Kyoto

1523

1987

107.8

95.2

Hyogo

500

1988

103.8

97.8

Yamaguchi

1579

1990

93.8

100.5

Kochi

1211

1990

78.0

106.2

Fukuoka

1532

1989

108.4

98.0

Saga

1624

1989

92.3

93.3

  1. 1: Standardized mortality rate Col SMR: Colon cancer SMR; Rec SMR: Rectal cancer SMR