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. 2008 Jul 15;337:a258. doi: 10.1136/bmj.a258

Table 3.

 Estimated differences in systolic and diastolic blood pressure associated with dietary red meat intake (g/24 h) higher by 2 SD† (g/24 h) in 4680 adults

Model Difference (99% CI)
Systolic blood pressure (mm Hg) Diastolic blood pressure (mm Hg)
Total red meat (g/24 h):
 1 1.59 (0.48 to 2.69)*** 0.90 (0.14 to 1.66)**
 2 1.28 (0.17 to 2.39)** 0.76 (−0.01 to 1.52)
 3 1.25 (0.04 to 2.45)** 0.73 (−0.10 to 1.56)
 4a 1.23 (0.02 to 2.44)** 0.74 (−0.10 to 1.57)
 4b 1.18 (−0.04 to 2.39) 0.67 (−0.17 to 1.51)
 4c 1.21 (0.01 to 2.41)** 0.74 (−0.09 to 1.58)
 4d 1.28 (0.08 to 2.49)** 0.75 (−0.08 to 1.59)
 4e 0.98 (−0.25 to 2.21) 0.59 (−0.27 to 1.44)
 4f 1.51 (0.12 to 2.90)** 0.91 (−0.05 to 1.87)
 4g 1.22 (0.02 to 2.43)** 0.73 (−0.10 to 1.57)
 4h 1.62 (0.28 to 2.95)*** 0.93 (0.01 to 1.86)**
Beef (g/24 h):
 1 1.34 (0.30 to 2.39)*** 0.70 (−0.02 to 1.45)
 2 1.13 (0.09 to 2.17)** 0.59 (−0.15 to 1.31)
 3 0.99 (−0.10 to 2.07) 0.50 (−0.25 to 1.26)
 4a 0.97 (−0.11 to 2.06) 0.51 (−0.25 to 1.20)
 4b 0.96 (−0.13 to 2.04) 0.51 (−0.27 to 1.24)
 4c 0.96 (−0.12 to 2.05) 0.48 (−0.24 to 1.29)
 4d 0.98 (−0.10 to 2.06) 0.51 (−0.25 to 1.26)
 4e 0.78 (−0.32 to 1.88) 0.51 (−0.37 to 1.10)
 4f 1.14 (−0.11 to 2.39) 0.39 (−0.25 to 1.48)
 4g 1.01 (−0.08 to 2.09) 0.61 (−0.23 to 1.28)
 4h 1.09 (−0.05 to 2.22) 0.53 (−0.58 to 1.37)

1=age, sex, sample, height, weight, special diet, supplement use, physical activity, cardiovascular disease and diabetes, family history of hypertension; 2=plus urinary sodium, urinary potassium, and alcohol; 3=plus cholesterol, saturated fatty acids, and polyunsaturated fatty acids; 4a=plus fibre; 4b=or plus vegetable protein; 4c=or plus magnesium; 4d=or plus phosphorus; 4e=or plus calcium; 4f=or plus haem iron; 4g=or plus non-haem iron; 4h=or plus animal protein.

**P<0.01.

***P<0.001.

†2 SD difference: 102.6 g/24 h (red meat) and 75.6 g/24 h (beef).