Table 5 Odds ratios (ORs) and 95% confidence intervals (95%CIs) of colorectal cancer according to quartiles of fish intakes by cancer site.

From: Higher freshwater fish and sea fish intake is inversely associated with colorectal cancer risk among Chinese population: a case-control study

 

Colon cancer (n = 721)

Rectal cancer (n = 468)

Q1

Q2

Q3

Q4

P trend

Q1

Q2

Q3

Q4

P trend

Freshwater fish

 No. Cases/Controls

228/296

178/298

174/298

141/297

 

188/296

118/298

90/298

72/297

 

 Crude OR (95%CI)

1

0.78 (0.60–1.00)

0.76 (0.59–0.98)

0.62 (0.47–0.80)

0.01

1

0.62 (0.47–0.83)

0.48 (0.35–0.64)

0.38 (0.28–0.52)

<0.01

 Adjusted OR (95%CI)a

1

0.79 (0.60–1.04)

0.70 (0.53–0.92)

0.55 (0.42–0.74)

<0.01

1

0.66 (0.49–0.88)

0.46 (0.33–0.63)

0.40 (0.28–0.55)

<0.01

Sea fish

 No. Cases/Controls

219/297

166/298

129/297

207/297

 

157/297

128/298

85/297

98/297

 

 Crude OR (95%CI)

1

0.76 (0.58–0.98)

0.59 (0.45–0.77)

0.95 (0.74–1.21)

0.35

1

0.81 (0.61–1.08)

0.54 (0.40–0.74)

0.62 (0.46–0.84)

<0.01

 Adjusted OR (95%CI)a

1

0.73 (0.56–0.97)

0.56 (0.42–0.75)

0.91 (0.70–1.20)

0.30

1

0.87 (0.65–1.18)

0.58 (0.42–0.81)

0.66 (0.48–0.91)

0.01

Dried/salted fish

 No. Cases/Controls

165/297

244/297

123/298

189/297

 

107/297

151/297

86/298

124/297

 

 Crude OR (95%CI)

1

1.48 (1.15–1.91)

0.74 (0.56–0.99)

1.15 (0.88–1.49)

0.51

1

1.41 (1.05–1.90)

0.80 (0.58–1.11)

1.16 (0.86–1.57)

0.80

 Adjusted OR (95%CI)a

1

1.32 (1.00–1.74)

0.79 (0.59–1.08)

1.21 (0.91–1.61)

0.85

1

1.25 (0.91–1.70)

0.82 (0.58–1.15)

1.15 (0.84–1.59)

0.98

Shellfish

 No. Cases/Controls

196/297

120/298

199/297

206/297

 

159/297

90/298

104/297

115/297

 

 Crude OR (95%CI)

1

0.61 (0.46–0.81)

1.02 (0.79–1.31)

1.05 (0.82–1.35)

0.16

1

0.56 (0.42–0.77)

0.65 (0.49–0.88)

0.72 (0.54–0.97)

0.04

 Adjusted OR (95%CI)a

1

0.68 (0.50–0.91)

1.02 (0.78–1.35)

1.10 (0.83–1.45)

0.17

1

0.63 (0.46–0.87)

0.73 (0.53–1.00)

0.85 (0.62–1.16)

0.37

Fresh fish

 No. Cases/Controls

211/296

161/298

197/299

152/296

 

207/296

96/298

87/299

78/296

 

 Crude OR (95%CI)

1

0.76 (0.58–0.98)

0.92 (0.72–1.19)

0.72 (0.55–0.94)

0.06

1

0.46 (0.34–0.62)

0.42 (0.31–0.56)

0.38 (0.28–0.51)

<0.01

 Adjusted OR (95%CI)a

1

0.66 (0.50–0.88)

0.81 (0.62–1.07)

0.63 (0.47–0.83)

<0.01

1

0.43 (0.32–0.59)

0.43 (0.32–0.60)

0.38 (0.28–0.53)

<0.01

  1. aOdds ratio was adjusted for age, sex, marital status, education, income level, occupation, family history of cancer, smoking status, passive smoking, alcohol drinking, physical activity, BMI.
Back to article page