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Table 3 Use of meat and dairy products in cases and matched controls

From: Nutrition and lung cancer: a case control study in Iran

Diet

 

Control (%)

Case (%)

ORa(95% CI)

P_value

Meat

Sheep

Lower third

190 (39.5)

69 (28.9)

Referent

-

Middle third

212 (44.1)

130 (54.4)

21.7 (1.45-3.26)

<0.0001

Upper third

79 (16.4)

40 (16.7)

1.54 (0.91-2.62)

0.11

Beef

Lower third

265 (55.0)

105 (43.9)

Referent

-

Middle third

183 (38.0)

104 (43.5)

1.41 (0.96-2.09)

0.08

Upper third

34 (7.0)

30 (12.6)

2.67 (1.39-5.10)

0.003

 

Test for trend: P = 0.002

Chicken

<four a month

156 (32.4)

74 (3.0)

Referent

-

2-4 a week

278 (57.7)

141 (59.0)

1.19 (0.80-1.75)

0.40

≥once a day

48 (9.9)

24 (10.0)

1.36 (0.73-2.53)

0.33

Sheep and beef liver

Lower third

303 (63.0)

94 (39.5)

Referent

-

Middle third

102 (21.2)

109 (45.8)

4.44 (2.82-7.01)

<0.0001

Upper third

76 (15.8)

35 (14.7)

1.52 (0.88-2.62)

0.14

Fish

Never

86 (17.9)

23 (9.6)

Referent

-

<four a month

238 (49.5)

141 (59.0)

2.16 (1.24-3.77)

0.006

≥four a month

157 (32.6)

75 (31.4)

1.71 (0.93-3.15)

0.08

Shrimps

Never

328 (68.2)

189 (79.4)

Referent

-

<four a month

98 (20.4)

25 (10.5)

0.42 (0.24-0.72)

0.002

≥four a month

55 (11.4)

24 (10.1)

0.78 (0.40-1.53)

0.47

Dairy products

Eggs

Lower third

117 (49.2)

230 (47.8)

Referent

-

Middle third

70 (33.2)

181 (37.6)

0.69 (0.46-1.03)

0.07

Upper third

42 (17.6)

70 (14.6)

1.21 (0.72-2.04)

0.48

  

Test for trend: P = 0.07

Milk

Lower third

157 (66.0)

346 (71.8)

Referent

-

Middle third

61 (25.6)

94 (19.5)

1.97 (1.20-3.21)

0.007

Upper third

20 (8.4)

42 (8.7)

2.64 (1.54-4.51)

<0.0001

  

Test for trend : P < 0.0001

Butter

Lower third

172 (35.7)

49 (20.6)

Referent

-

Middle third

194 (40.2)

99 (41.6)

1.70 (1.07-2.71)

0.025

Upper third

116 24.1)

90 (37.8)

2.94 (1.79-4.82)

<0.0001

  

Test for trend: P < 0.0001

White cheese

Lower third

49 (20.6)

261 (41.1)

Referent

-

Middle third

143 (60.1)

185 (38.4)

3.87 (2.52-2.93)

<0.0001

Upper third

46 (19.3)

36 (7.5)

6.52 (3.49-12.18)

<0.0001

  

Test for trend: P < 0.0001

Yogurt

Lower third

151 (63.4)

337 (69.8)

Referent

-

Middle third

67 (28.2)

108 (22.3)

2.37 (1.46-3.83)

<0.0001

Upper third

20 (8.4)

38 (7.9)

2.98 (1.77-5.00)

<0.0001

   

Test for trend: P < 0.0001

  1. aAdjusted for smoking, ethnicity, marital status and education.