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 Rsquared 
Pvalue 



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 Rsquared, and Pvalue 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:10.1186/1472689054 