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. 2019 Mar 6;9:3755. doi: 10.1038/s41598-019-40255-9

Figure 3.

Figure 3

The correlation between clinical grade and pixel coverage value on the conjunctival blood vessels. This box-whisker plot represents the correlation between clinical grades and pixel coverage values on conjunctival blood vessels (%). For both variables, there were monotonic increases, and a one-tailed test confirmed a significant difference (P < 0.01, Jonckheere-Terpstra Trend Test, one-tailed test).