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Table 5 Synergistic effect of AGT235 MM and AT1R CC genotypes and classical risk factors in CAD patients and controls

From: RAS gene polymorphisms, classical risk factors and the advent of coronary artery disease in the Portuguese population

Classical risk factor

AGT235 MM

Whole population1

AT1R CC

Whole population1

Hypertension

 

CAD

Controls

OR(95%CI)

 

CAD

Controls

OR(95%CI)

0

0

88

293

1

0

99

334

1

0

1

18

62

0.97(0.52–1.78)NS

1

7

21

1.12(0.42–2.89)NS

1

0

153

130

3.92(2.77–5.55)***

0

182

150

4.09(2.96–5.66)***

1

1

39

25

5.19(2.88–9.41)***

1

10

5

6.75(2.06–23.27)**

  

SI = 1.44; SIM = 1.36; RERI = 1.30; AP = 0.25

SI = 1.79; SIM = 1.47; RERI = 2.54; AP = 0.38

Smoking

        

0

0

145

315

1

0

177

356

1

0

1

37

58

1.39(0.86–2.24)NS

1

5

17

0.59(0.19–1.74)NS

1

0

96

108

1.93(1.36–2.75)**

0

104

128

1.63(1.18–2.27)**

1

1

20

29

1.50(0.79–2.85)NS

1

12

9

2.68(1.03–7.05)*

  

SI = 0.38; SIM = 0.56; RERI = -0.82; AP = -0.55

SI = 7.64; SIM = 2.79; RERI = 1.46; AP = 0.54

Obesity

        

0

0

172

352

1

0

201

394

1

0

1

42

65

1.32(0.84–2.07)NS

1

13

23

1.11(0.52–2.34)NS

1

0

69

71

1.99(1.34–2.95)**

0

80

90

1.74(1.22–2.50)**

1

1

15

22

1.40(0.67–2.89)NS

1

4

3

2.61(0.49–14.83)NS

  

SI = 0.31; SIM = 0.53; RERI = -0.91; AP = -0.65

SI = 1.89; SIM = 1.35; RERI = 0.76; AP = 0.29

Diabetes

        

0

0

171

396

1

0

201

450

1

0

1

41

80

1.19(0.77–1.84)NS

1

11

26

0.95(0.43–2.05)NS

1

0

70

27

6.00(3.63–9.98)***

0

80

34

5.27(3.34–8.33)***

1

1

16

7

5.29(2.00–14.47)***

1

6

0

--

  

SI = 0.83; SIM = 0.74; RERI = -0.90; AP = -0.17

--

Dyslipidaemia

        

0

0

73

370

1

0

82

424

1

0

1

14

80

0.89(0.45–1.71)NS

1

5

26

0.99(0.32–2.83)NS

1

0

168

53

16.07(10.59–24.43)***

0

199

60

17.15(11.62–25.37)***

1

1

43

7

31.14(12.81–79.15)***

1

12

0

--

  

SI = 2.01; SIM = 2.18; RERI = 15.18; AP = 0.49

--

  1. SI, Rothman's synergy index for interaction; RERI, relative excess risk due to interaction; AP, proportion of disease attributable to interaction; *P < 0.05, **P < 0.005, ***P < 0.0001; 1We performed no further subdivision when analysing these polymorphisms because several classes resulted statistically impossible to analyse due to the reduced number of individuals there included.