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. 2021 May 15;21:262. doi: 10.1186/s12903-021-01622-z

Table 4.

Correlation test for OHIP-values

Gender Age Pain Reticular lichen Lichen presentation form Thornhill Amalgam Thornhill Metal
Correlation coefficient -0.41* 0.10 0.62* − 0.23* − 0.28 − 0.05 − 0.10
p value < 0.01 0.27 < 0.01 0.01 0.76 0.68 0.27

*Means statistical significant difference