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. 2019 May 15;18(1):802–816. doi: 10.3892/etm.2019.7579

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Copyright: © Feng et al.

This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Figure 3. — Forest plots for the meta-analysis on the efficacy and safety of NAC therapy for idiopathic pulmonary fibrosis (IPF) with regard to the secondary outcomes. (A) DLCO; (B) DLCO%; (C) VC; (D) PaO₂; (E) 6MWT; (F) mortality. DLCO, diffusing capacity for carbon monoxide; DLCO%, percentage predicted DLCO; VC, vital capacity; PaO₂, partial arterial oxygen pressure; 6MWT, 6-minute walking distance test; IV, inverse variance; Std., standard; M-H, Mantel-Haenszel; NAC, N-acetylcysteine; df, degrees of freedom.