Table 4 Weighted mean differences in systolic and diastolic blood pressure between the ARB treatment and control groups according to the types of drugs taken in both groups

From: The impact of angiotensin receptor blockers on arterial stiffness: a meta-analysis

 

Systolic blood pressure (mm Hg)

Diastolic blood pressure (mm Hg)

Groups

Studies ( n)

WMD; 95% CI; P

I2 (P)

Studies (n)

WMD; 95% CI; P

I2 (P)

Overall

52

−0.74; −1.58 to 0.11; 0.086

68.9% (0.000)

52

−0.58; −1.15 to −0.02; 0.042

78.8% (0.000)

By drugs in treatment group

 Valsartan

25

−0.16; −1.50 to 1.19; 0.821

74.1% (0.000)

25

−0.71; −1.63 to 0.20; 0.128

88.0% (0.000)

 Telmisartan

8

−1.12; −1.82 to −0.42; 0.002

0.0% (0.911)

8

0.35; −0.10 to 0.80; 0.123

0.0% (0.975)

 Losartan

9

−1.93; −4.08 to 0.22; 0.078

63.1% (0.006)

9

−0.68; −1.53 to 0.17; 0.117

21.0% (0.256)

 Candesartan

7

−1.73; −5.29 to 1.83; 0.340

49.7% (0.064)

7

−1.07; −3.47 to 1.32; 0.380

60.9% (0.018)

 Irbesartan

3

0.51; −2.42 to 3.45; 0.731

56.8% (0.099)

3

−0.49; −4.26 to 3.27; 0.798

62.2% (0.071)

By drugs in control group

 ACEI

9

−0.92; −2.74 to 0.91; 0.325

50.8% (0.039)

9

−0.90; −2.41 to 0.62; 0.248

57.7% (0.015)

 Placebo

6

−3.81; −6.70 to −0.91; 0.010

77.2% (0.001)

6

−2.65; −3.89 to −1.40; 0.000

36.1% (0.166)

 Diuretics

5

−1.31; −2.33 to −0.27; 0.013

0.0% (0.777)

5

−1.49; −3.63 to 0.64; 0.170

83.8% (0.000)

 CCB

20

0.51; −0.72 to 1.75; 0.417

65.6% (0.000)

20

0.50; −0.23 to 1.23; 0.179

79.8% (0.000)

 Beta blocker

4

−0.78; −2.88 to 1.32; 0.469

0.0% (0.991)

4

−2.11; −3.43 to −0.78; 0.002

4.4% (0.371)

 Non-RAS

5

−2.30; −6.12 to 1.52; 0.238

58.3% (0.048)

5

−0.73; −2.77 to 1.31; 0.482

33.2% (0.200)

  1. Abbreviations: 95% CI, 95% confidence interval; ACEI, angiotensin converting enzyme inhibitor; ARB, angiotensin receptor blocker; CCB, calcium channel blocker; I2, inconsistency index; NA, not available; RAS, renin–angiotensin system; WMD, weighted mean difference.