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Table 4 Subgroup comparisons results of the meta-analysis

From: A meta-analysis on the prevalence, associated factors and diagnostic methods of mental stress induced myocardial ischemia

No. Comparison Studies (n) Sample size Effect Model RR/MD/SMD Heterogeneity Test for
overall effect
1 Female vs. male 11 2131 Fix 1.17 [0.93, 1.48] Chi2 = 14.36, df = 10 (P = 0.16); I2 = 30% Z = 1.35 (P = 0.18)
2 White vs. other races 3 536 Fix 0.75 [0.48, 1.17] Chi2 = 1.32, df = 2 (P = 0.52); I2 = 0% Z = 1.26 (P = 0.21)
3 Smoke+ vs. Smoke− 8 1578 Fix 1.10 [0.86, 1.40] Chi2 = 8.85, df = 7 (P = 0.26); I2 = 21% Z = 0.72 (P = 0.47)
4 Hypertension+ vs. Hypertension− 8 1578 Fix 1.07 [0.80, 1.42] Chi2 = 5.33, df = 7 (P = 0.62); I2 = 0% Z = 0.43 (P = 0.66)
5 Hyperlipidemia+
vs. Hyperlipidemia−
8 1572 Fix 1.13 [0.80, 1.60] Chi2 = 3.67, df = 7 (P = 0.82); I2 = 0% Z = 0.70 (P = 0.48)
6 Diabetes+ vs. Diabetes− 8 1578 Fix 1.26 [0.98, 1.62] Chi2 = 12.07, df = 7 (P = 0.10); I2 = 42% Z = 1.83 (P = 0.07)
7 Depression+ vs. Depression− 2 389 Fix 1.36 [0.78, 2.39] Chi2 = 0.06, df = 1 (P = 0.80); I2 = 0% Z = 1.09 (P = 0.28)
8 Post MI+ vs. Post MI− 5 1345 Fix 1.29 [1.00, 1.66] Chi2 = 1.85, df = 4 (P = 0.76); I2 = 0% Z = 1.95 (P = 0.05)
9 PTCA+ vs. PTCA− 3 1128 Fix 0.88 [0.67, 1.16] Chi2 = 0.53, df = 2 (P = 0.77); I2 = 0% Z = 0.90 (P = 0.37)
10 CABG+ vs. CABG− 3 1128 Random 1.59 [1.00, 2.52] Tau2 = 0.10; Chi2 = 5.18, df = 2 (P = 0.07); I2 = 61% Z = 1.98 (P = 0.05)
11 Aspirn+ vs. Aspirin− 5 1279 Fix 0.93 [0.65, 1.34] Chi2 = 0.34, df = 4 (P = 0.99); I2 = 0% Z = 0.36 (P = 0.72)
12 Other antiplatelet agent+
& Other antiplatelet agent−
3 1128 Fix 1.21 [0.91, 1.61] Chi2 = 1.94, df = 2 (P = 0.38); I2 = 0% Z = 1.29 (P = 0.20)
13 ACEI+ vs. ACEI− 5 1279 Fix 1.13 [0.87, 1.46] Chi2 = 2.12, df = 4 (P = 0.71); I2 = 0% Z = 0.92 (P = 0.36)
14 ARB+ vs. ARB− 2 967 Random 1.22 [0.53, 2.82] Tau2 = 0.26; Chi2 = 3.53, df = 1 (P = 0.06); I2 = 72% Z = 0.46 (P = 0.64)
15 Beta-block+ vs. Beta-block− 6 1417 Fix 1.05 [0.78, 1.41] Chi2 = 2.50, df = 5 (P = 0.78); I2 = 0% Z = 0.32 (P = 0.75)
16 CCB+ vs. CCB− 4 674 Fix 0.84 [0.58, 1.22] Chi2 = 0.78, df = 3 (P = 0.85); I2 = 0% Z = 0.92 (P = 0.36)
17 Statin+ vs. Statin− 6 1417 Fix 1.18 [0.80, 1.75] Chi2 = 4.30, df = 5 (P = 0.51); I2 = 0% Z = 0.83 (P = 0.40)
  1. ACEI angiotensin converting enzyme inhibitor, ARB angiotensin receptor block, CCB calcium-channel blocker, MI myocardial ischemia