Error frequency in physical examination skills of cardiac and pulmonary examinations.

<p>Data are calculated as error frequency/total error frequency (n). Comparison of cardiac examination: Pearson chi square, <i>p</i> = 0.009. Comparison of pulmonary examination: Pearson chi square, <i>p</i> = 0.736.</p><p>Error frequency in physical examination skills of cardiac and pulmonary examinations.