Fig. 3From: Genotype-independent association between profound vitamin D deficiency and delayed sputum smear conversion in pulmonary tuberculosisTime to sputum smear conversion by baseline vitamin D status (a) and drug sensitivity of M. tuberculosis isolate (b). Numbers of patients with positive sputum smear remaining in follow-up (number at risk) at 0, 14, 28, 42, 56 and 70Â days are shownBack to article page