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Table 1 Quality of assessment of each included studies

From: Effect of adjuvant interferon therapy on hepatitis B virus-related hepatocellular carcinoma: a systematic review

Study Trial type Random sample Allocation concealment Blinded allocation Lost of follow-up ITT Grade
Lo CM RCT Adequate Adequate Unclear Yes Yes A
Li M RCT Adequate Unclear Unclear Yes Yes B
Li N nRCT Adequate Adequate Unclear Yes Yes B
Sun HC RCT Adequate Adequate Adequate Yes Yes A
Chen LT RCT Adequate Adequate Adequate Yes Yes A
Chao Zou nRCT Adequate Adequate Adequate Yes Yes A