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. 2015 Apr 15;10(4):e0123211. doi: 10.1371/journal.pone.0123211

Table 2. Matching by Propensity Score method in participants with and without newly diagnosed atrial fibrillation (AF).

Before matching After matching
Data Source Without AF With AF P Value Without AF With AF P Value
(n = 704,225) (n = 3,737) (n = 14,948) (n = 3,737)
n (%) n (%) n (%) n (%)
Gender <0.0001 1.0000
 Female 354,651 (50.4) 1,659 (44.4) 6,636 (44.4) 1,659 (44.4)
 Male 349,574 (49.6) 2,078 (55.6) 8,312 (55.6) 2,078 (55.6)
Elder 89,044 (12.6) 2,345 (62.8) <0.0001 9,380 (62.8) 2,345 (62.8) 1.0000
HTN 176,682 (25.1) 2,316 (62.0) <0.0001 9,264 (62.0) 2,316 (62.0) 1.0000
DM 91,949 (13.1) 945 (25.3) <0.0001 3,780 (25.3) 945 (25.3) 1.0000
Dyslipidemia 138,514 (19.7) 899 (24.1) <0.0001 3,596 (24.1) 899 (24.1) 1.0000
MACE 62,962 (8.94) 1,753 (46.9) <0.0001 4,006 (26.8) 1,753 (46.9) <0.0001
 MI 7,270 (1.03) 219 (5.86) <0.0001 502 (3.36) 219 (5.86) <0.0001
 PCI 4,378 (0.62) 149 (3.99) <0.0001 252 (1.69) 149 (3.99) <0.0001
 CABG 985 (0.14) 34 (0.91) <0.0001 64 (0.43) 34 (0.91) 0.0003
 HF 14,996 (2.13) 1,013 (27.1) <0.0001 1,167 (7.81) 1,013 (27.1) <0.0001
 Stroke 46,119 (6.55) 818 (21.9) <0.0001 2,911 (19.5) 818 (21.9) 0.0010
 Malignant arrhythmia 2,804 (0.40) 132 (3.53) <0.0001 186 (1.24) 132 (3.53) <0.0001
 Thrombolysis 4,378 (0.62) 149 (3.99) <0.0001 252 (1.69) 149 (3.99) <0.0001
 Cardiogenic shock 692 (0.10) 52 (1.39) <0.0001 54 (0.36) 52 (1.39) <0.0001
 Pulmonary embolism 625 (0.09) 21 (0.56) <0.0001 37 (0.25) 21 (0.56) 0.0020
 Deep vein thrombosis 1,947 (0.28) 38 (1.02) <0.0001 94 (0.63) 38 (1.02) 0.0113
Mortality 151 (0.02) 60 (1.61) <0.0001 8 (0.15) 60 (1.61) <0.0001
 Stroke death 18 (11.9) 10 (16.7) <0.0001 0 (0.0) 10 (16.7) <0.0001
 Non-stroke death 133 (88.1) 50 (83.3) <0.0001 8 (100.0) 50 (83.3) <0.0001

Elder = the people are over 65 years old; AF = atrial fibrillation; CABG = coronary artery bypass grafting; DM = diabetes mellitus; HF = heart failure; HTN = hypertension; MACE = major adverse cardiovascular events; MI = myocardial infarction; PCI = percutaneous coronary intervention.