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(Effect of non-invasive positive pressure ventilation and long-term oxygen therapy in patients with stable COPD) [Chinese - simplified characters]
Zhou XH, Yang J, Shen C
Zhong Guo Lin Chuang Yi Xue [Chinese Journal of Clinical Medicine] 2008 Aug;15(4):486-488
clinical trial
5/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: No; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: Yes; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

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