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Table 1 Baseline characteristics for patient strata according to quartiles of BNP.

From: B-type natriuretic peptide and high sensitive C-reactive protein predict 2-year all cause mortality in chest pain patients: a prospective observational study from Salta, Argentina

Quartiles of BNP pg/mL
Characteristics < 36 36-78 79-180 181-4000 p value
Age; years ± SD 57.9 ± 12.4 60.7 ± 11.5 62.7 ± 13.9 67.4 ± 13.8 0.000
Female n (%) 95(38.8) 96(39.0) 94(38.2) 109(44.5) 0.453
Hypertension n (%) 142(58.0) 157(63.8) 173(70.3) 162(66.1) 0.036
DM n (%) 46 (19.1) 45 (18.4) 43 (17.6) 68(28.3) 0.012
Current Smoker n (%) 90(37.5) 57(23.5) 51(20.9) 41(17.1) 0.000
Past Smoker n (%) 113(47.3) 130(53.9) 140(57.6) 154(64.4) 0.000
Angina Pectoris n (%) 45(18.4) 47(19.1) 68(27.6) 63(25.7) 0.028
CHF n (%)
Killip-Kimball Class 2-4
33(13.5) 44(17.9) 33(13.4) 55(22.4) 0.021
MI n (%) 6(2.4) 21(8.5) 32(13) 35(14.3) 0.000
CABG n (%) 3(1.2) 10(4.1) 14(5.7) 20(8.3) 0.003
PCI n (%) 17(6.9) 23(9.3) 30(12.2) 28(11.4) 0.208
STEMI n (%) 36(14.9) 23(9.5) 40(16.5) 45(18.8) 0.030
TnT Positive n (%) 67(27.5) 65(26.4) 100(40.7) 156(63.7) 0.000
Creatinine n (%)
(above median)
113(46.3) 111(45.1) 118(48.4) 143(58.6) 0.011
Cholesterol/Statin n (%) 31(12.7) 40(16.3) 49(19.9) 40(16.3) 0.191
Beta-blocker n (%) 53(21.9) 50(20.5) 76(31.1) 74(31.1) 0.006
CHD n (%) 56(23.0) 71(29.1) 98(40.0) 99(40.9) 0.000
  1. BNP, brain natriuretic peptide; DM, diabetes mellitus; CHF, congestive heart failure; MI, myocardial infarction; CABG, coronary artery bypass grafting; PCI, percutaneous coronary intervention; STEMI, ST-elevation myocardial infarction; TnT, troponin-T; cholesterol = conc. > 250 mg/dl; CHD, coronary heart disease