Table 2. Barzooka screening tool performance in an external validation set of bioRxiv preprints.

Class	Manually labeled cases	False positives	Precision	Recall	F1 score
Bar graph of counts or proportions (appropriate)	345	60	0.82	0.81	0.82
Bar graph of continuous data (inappropriate)	405	25	0.94	0.92	0.93
Bar graph with dot plot	74	37	0.63	0.86	0.73
Dot plot	257	51	0.80	0.80	0.80
Box plot	255	36	0.87	0.91	0.89
Violin plot	57	27	0.65	0.89	0.76
Histogram	198	66	0.72	0.85	0.78
Flow chart	20	26	0.40	0.85	0.54
Pie chart	71	12	0.83	0.85	0.84

The bioRxiv external validation set included 1107 bioRxiv preprints published in May 2019.