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Table 1 In simulating the modified approach we considered as "relevant" the citations that were retrieved in full text ("Level 1" screening in Figure 1).

From: Semi-automated screening of biomedical citations for systematic reviews

Dataset Total citations (N) Retrieved in full text (% of N) Included in the systematic review (% of N)
Proton Beam 4,751 243 (5.1) 23 (0.5)
COPD 1,606 196 (12.2) 104 (6.5)
Micro Nutrients 4,010 258 (6.4) 139 (3.5)
  1. The Proton Beam dataset is from a systematic review of comparative studies on charged particle radiotherapy versus alternate interventions for cancers [32]. The COPD dataset is from a systematic review and meta-analysis of all genetic association studies in chronic obstructive pulmonary disease. The Micronutrients dataset is from a systematic empirical appraisal of reporting of systematic reviews on associations of micronutrients and disease [33]. Note the class imbalance in all three datasets.