Table 5

Explanatory power of age as well as subjective and objective salivary variables on DMFS in the patient group and control group all together (n = 40).

Estimate for DMFS

SD for DMFS estimate

Adjusted R-squared

P-value


Subjective model

Age

1.4

0.4

0.26

<0.001

+ oral dryness questionnaire

11.1

2.3

0.53

<0.001

Objective model

Age

1.4

0.4

0.26

<0.001

+ UWS

-57.4

20.7

0.37

<0.001

+ SWS

-28.9

9.4

0.49

<0.001

+ UPS

-499.2

173.0

0.57

<0.001


Estimate, SD, adjusted R-squared, and P-value obtained by multiple regression analysis. The estimate states the increase or decrease in DMFS upon addition of the explaining variables (age + oral dryness, or + UWS, SWS, and UPS) by an integer (one year, score, or ml). Since complaints of oral dryness and salivary flow demonstrated strong interrelations they could not be included in the same analysis. As shown age in combination with complaints of oral dryness explained 53% of the variance in DMFS, and age combined with salivary flow rates explained 57%.

Pedersen et al. BMC Clinical Pathology 2005 5:4   doi:10.1186/1472-6890-5-4

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