Table 1. Barzooka screening tool performance in an internal validation set.

Class	Manually labeled cases	False positives	Precision	Recall	F1 score
Bar graph of counts or proportions (appropriate)	407	65	0.84	0.86	0.85
Bar graph of continuous data (inappropriate)	671	35	0.95	0.91	0.93
Bar graph with dot plot	149	10	0.93	0.91	0.92
Dot plot	393	33	0.91	0.85	0.88
Box plot	368	29	0.92	0.88	0.90
Violin plot	340	13	0.96	0.94	0.95
Histogram	238	32	0.86	0.86	0.83
Flow chart	276	32	0.89	0.91	0.90
Pie chart	160	5	0.97	0.92	0.94

The internal validation set included 10% (n=3812 pages) of the pages classified to train the algorithm.