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. 2021 Feb 12;12:2040622321993438. doi: 10.1177/2040622321993438

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© The Author(s), 2021

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 1. — Flow diagram of the study selection process.

MTX, methotrexate; RCT, randomized controlled trial.

ACR, American College of Rheumatology; CI, confidence interval; DAS28, Disease activity score 28; GSZD, GuiZhi-ShaoYao-ZhiMu decoction; MTX, methotrexate; M–H, Mantel–Haenszel.