Fig. 3From: Impact of emphysema on sputum culture conversion in male patients with pulmonary tuberculosis: a retrospective analysisProportion of pulmonary tuberculosis (PTB) patients with sputum culture conversion after treatment initiation (with vs without emphysema). Kaplan–Meier curves revealed significantly longer sputum time to culture conversion (TTC) in 38 PTB patients with emphysema (median TCC 52.0 days) than in 41 patients without emphysema (28.0 days) (p < 0.001, log-rank test)Back to article page