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Table 1 Baseline characteristics of patients

From: Association between coronary dominance and acute inferior myocardial infarction: a matched, case-control study

Clinical variables Unmatched (complete) dataset Matched (1:2) dataset
Inferior MI (n = 265) Control (n = 899) P Inferior MI (n = 265) Control (n = 530) P
Age (years) 58.8 ± 11.4 58.1 ± 9.8 0.364 58.8 ± 11.4 58.6 ± 10.7 0.816
Sex, n (%)    < 0.001    1.000
 Female 34 (12.8) 365 (40.6) 34 (12.8) 68 (12.8)
 Male 231 (87.2) 534 (59.4) 231 (87.2) 462 (87.2)
Baseline SBP (mmHg) 128.8 ± 22.5 131.3 ± 30.3 0.143 128.8 ± 22.5 130.6 ± 31.8 0.345
Heart rate (bpm) 74.9 ± 14.6 72.6 ± 19.3 0.045 74.9 ± 14.6 75.9 ± 15.5 0.376
CAD risk factors, n (%)
 Smoking 168 (63.4) 318 (35.4) < 0.001 168 (63.4) 270 (50.9) 0.001
 Diabetes 61 (23.0) 91 (10.1) < 0.001 61 (23.0) 62 (11.7) < 0.001
 Hypertension 124 (46.8) 458 (50.9) 0.263 124 (46.8) 281 (53.0) 0.099
 Hyperlipidemia 24 (9.1) 106 (11.8) 0.267 24 (9.1) 67 (12.6) 0.156
 Family history of CAD 207 (78.1) 661 (73.5) 0.148 207 (78.1) 387 (73.2) 0.141
Dominance (%)    0.033    0.018
 Right- 249 (94.0) 798 (88.8) 249 (94.0) 466 (87.9)
 Co- 4 (1.5) 27 (3.0) 4 (1.5) 21 (4.0)
 Left- 12 (4.5) 74 (8.2) 12 (4.5) 43 (8.1)
  1. Results are presented as mean ± standard deviation or n (%). The P values represent the difference between inferior MI and control. CAD coronary artery disease; 95% CI 95% confidence interval, MI myocardial infarction, OR odds ratio, SBP systolic blood pressure