Dental Calculi of Siberian Natives, Russian Settlers, and Korean People of Joseon Dynasty Period in the 16th to 19th Century Eurasia Continent

Table 4

Statistical analysis of dental calculus prevalence between Siberian natives, Russian settlers, and Joseon people (Chi-squared test; value).

	Siberian natives	Russian settlers	Joseon people
Siberian natives		^a < 2.2e-16	^a < 2.2e-16
Russian settlers	^a 0.0002175		^a 9.669e-10
Joseon people	^a1.159e-08	^a 0.03859

Per individual for lower left cells; per teeth for upper right cells. ^aChi-squared test.