Table 2.

Electronic prioritization of literature for hazard identification.

Group of studies	Prioritization approach	Number of prioritized studies
2015 literature search (original search): 50,309 records retrieved – DoCTER Prioritization
Groups A–D (Fig. 1C)	DoCTER – Supervised Clustering	4605
Groups E–F (Fig. 1C)	DoCTER – Supervised Clustering and ML	3363
Studies with titles only	DoCTER – ML	3209
Total number electronically prioritized – DoCTER		11,177
2017–2021 literature search updates
2017	SWIFT-Active Screener – Active	609
2018	ML	819
2019		855
2020		917
2021		842
Total number electronically prioritized – Active ML		4042