37 Regional differences in perceived oral dryness Table 3 Correlation of the nine regions of the Regional Oral Dryness Inventory, r: Spearman’s rho correlation coefficient (BCa 95% confidence interval). Upper lip Anterior palate Inside Cheeks Posterior palate Lower lip Floor of the mouth Posterior tongue Anterior tongue Pharynx Upper lip r 0.69 (0.61–0.76)* r 0.65 (0.56–0.72)* r 0.56 (0.46–0.65)* r 0.82 (0.76–0.86)* r 0.61 (0.51–0.70)* r 0.54 (0.44–0.63)* r 0.57 (0.47–0.66)* r 0.54 (0.44–0.63)* Anterior palate r 0.72 (0.65–0.78)* r 0.73 (0.66–0.79)* r 0.65 (0.57–0.72)* r 0.70 (0.62–0.76)* r 0.66 (0.58–0.75)* r 0.67 (0.58–0.75)* r 0.58 (0.49–0.67)* Inside cheeks r 0.65 (0.56–0.73)* r 0.65 (0.56–0.72)* r 0.75 (0.68–0.82)* r 0.65 (0.56–0.74)* r 0.64 (0.54–0.72)* r 0.61 (0.51–0.70)* Posterior palate r 0.56 (0.47–0.64)* r 0.69 (0.61–0.76)* r 0.79 (0.73–0.85)* r 0.65 (0.57–0.73)* r 0.69 (0.61–0.76)* Lower lip r 0.67 (0.60–0.74)* r 0.55 (0.45–0.63)* r 0.63 (0.54–0.71)* r 0.51 (0.41–0.59)* Floor of mouth r 0.73 (0.66–0.79)* r 0.72 (0.66–0.78)* r 0.65 (0.56–0.73)* Posterior tongue r 0.75 (0.67–0.81)* r 0.71 (0.63–0.78)* Anterior tongue Pharynx r 0.57 (0.47–0.65)* * = p < 0.01 2
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