Hospital Sírio-Libanês的Rafael Leite Pacheco、Rachel Riera和Ana Luiza Cabrera Martimbianco开发了Stata社区命令direct_flow，用来快速绘制系统评价、研究综述和其他研究类型的流程图。

*net install 安装
net install direct_flow, from(https://rlpacheco.github.io/direct_flow/) replace
*查看帮助
help direct_flow
*github 安装
github install rlpacheco/direct_flow, replace

绘制上图的Stata代码如下：

direct_flow, model(1) n_databases(1.200) n_other_sources(5) ///
            n_duplicates(100) ///
			n_first_phase(1.105) ///
			n_excluded_first_phase(1.100) ///
			n_second_phase(5) ///
			n_excluded_second_phase(2) ///
			n_included_reports(3) n_included_studies(3) n_included_completed(2) n_included_ongoing(1) ///
			n_included_qualitative(2) n_included_quantitative(1) ///
			language(en)

绘制上图的Stata代码如下：

direct_flow, model(2) n_databases(1.200) n_other_sources(5) ///
            n_duplicates(100) ///
			n_after_duplicates(1.105) ///
			n_first_phase(1.105) ///
			n_excluded_first_phase(1.100) ///
			n_second_phase(5) ///
			n_excluded_second_phase(2) ///
			n_included_reports(3) n_included_studies(3) n_included_completed(2) n_included_ongoing(1)  ///
			n_included_qualitative(2) n_included_quantitative(1) ///
			language(en)

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