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. 2023 Jul 10;111(3):665–676. doi: 10.5195/jmla.2023.1631

Table 2.

Correlation of JU and PDC usage counts to rank Broad Subject Heading

Variables:
1. Journal Usage (JU)
2. Patient Driven Counts (PDC) Cut-off points: Quartiles 1 and 4		 Quartile, % Journal Usage (JU) Patient Driven Counts (PDC)
Q1 0% 1 1
Q2 25% 936.5 2
Q3 75% 52,739 866,810.25
Q4 100% 1,538,830 11,664,724
High PDC 100%
11,664,724
graphic file with name jmla-111-3-665-g003.jpg 		Middle PDC 75%
866,810
graphic file with name jmla-111-3-665-g003.jpg 		Low PDC 25%
2
graphic file with name jmla-111-3-665-g004.jpg
High JU 100%
1,538,830
graphic file with name jmla-111-3-665-g003.jpg 		High – High
graphic file with name jmla-111-3-665-g005.jpg 		High – Middle
graphic file with name jmla-111-3-665-g005.jpg 		High – Low
graphic file with name jmla-111-3-665-g005.jpg
Middle JU 75%
52,739 		Middle – High
graphic file with name jmla-111-3-665-g005.jpg 		Middle – Middle
graphic file with name jmla-111-3-665-g006.jpg 		Middle – Low
graphic file with name jmla-111-3-665-g007.jpg
Low JU 25%
936
graphic file with name jmla-111-3-665-g004.jpg 		Low-High
graphic file with name jmla-111-3-665-g004.jpg 		Low – Middle
graphic file with name jmla-111-3-665-g004.jpg 		Low-Low
graphic file with name jmla-111-3-665-g004.jpg

Key: Bold Star = Keep subject; Bold X = Reject subject; Unbolded = Discretionary; Unbolded = Discretionary