Age and sex distribution, and echocardiographic and electrocardiographic parameters in chronic chagasic patients and in noninfected individuals.

LVEDD, left ventricular end-diastolic diameter; LVESD, left ventricular end-systolic diameter; LVFS, fractional shortening; IS, interventricular septum; PW, posterior wall; LAD, left atrial diameter; AD, aortic diameter. Parameters and age are expressed as mean ± SEM values. P values for the comparison of group means (cardiomyophatic Chagas patients vs indeterminate Chagas patients/noninfected individuals) are also depicted. The nonparametric Kruskall-Wallis test was used to compare age means and Fisheŕs exact test for gender proportion. One-way ANOVA test was conducted for the comparative analysis of the echocardiographic parameters.