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Table 2 Five criteria used in quality assessment (61 studies)

From: China’s conversion of cropland to forest program: a systematic review of the environmental and socioeconomic effects

Quality criterionDefinitionPercentage of all papers meeting criteria (%)
1Data collection methods are thoroughly explained, clear and replicable68.9 (42 papers)
2Sample size is well explained and representative of the population54.1 (33 papers)
3Qualitative or quantitative analysis methods are thoroughly explained, clear and replicable; key terms and variables are well defined70.5 (43 papers)
4Results/conclusions are logically derived and supported by presented evidence80.3 (49 papers)
5Confounding factors are considered and well explained54.1 (33 papers)