The timing and seasonal amplitude of active tuberculosis cases in the mainland of China, 2005–2012.

<p>Abbreviations: SE, standard error; CI, confidence interval.</p>§<p>Two-tailed two independent samples Student’s <i>t</i>-test for difference in seasonal amplitudes.</p>¶<p>Student-Newman-Keuls Method of one way analysis of variance for all pairwise multiple comparison among seasonal amplitudes.</p>†<p><i>P</i> value>0.05 for difference in seasonal amplitudes between subgroup of peasant and subgroup of migrant worker.