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

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