The baseline characteristics of all the studies relevant to (CAG)n polymorphism in this meta-analysis.

CAD: coronary artery disease; MI: myocardial infarction; PTCA: percutaneous coronary angioplasty; CABG: coronary artery bypass grafting; PCR: polymerase chain reaction; SSCP: single strand conformational polymorphism analysis; MALDI-TOF MS: matrix-assisted laser desorption/ionization time-of-flight mass spectrometry.1Number of (CAG)n repeats: 9, 10 or 11 repeats; other, alleles with 5–8, 12, or 13 repeats.2Number of (CAG)n repeats: 9, 10 or 11 repeats; other, alleles with 4, 7 or 8 repeats.3Number of (CAG)n repeats: 9, 10 or 11 repeats; other, alleles with 6, 7, 8, 12, or 13 repeats..4Number of (CAG)n repeats: 9, 10 or 11 repeats; other, alleles with 5, 7, 8, or 12 repeats.5Number of (CAG)n repeats: other, alleles with 5, 6, or 7 repeats.6Number of (CAG)n repeats: 9, 10 or 11 repeats; other, alleles with 4, 5, 7, 8, 12–15 repeats.7Number of (CAG)n repeats: 9, 10 or 11 repeats; other, alleles with 4, 5, 7, 8, 12, 14, or 15 repeats.8Number of (CAG)n repeats: 9, 10 or 11 repeats; other, alleles with 4–8, 12–15 repeats.Comparison between (CAG)9 repeats and other types repeats performed by the Review Manager software; OR: odds ratio; 95%CI: 95% confidence interval.