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. 2013 Mar 25;8(3):e59615. doi: 10.1371/journal.pone.0059615

Table 3. A multiple logistic regression of whether the dentist provides diet counseling on 20% or more of patients (n = 163).

Variable Odds Ratio 95% CI p value
Dentists’ Individual Characteristics
Years since graduation from dental school 1.02 0.98 1.06 0.342
Gender (reference: male) 2.76 1.04 7.34 0.041
Practice Setting
Type of practice
Employed by another dentist 1.00
Self-employed without partners and without sharing of income, costs, or office space 0.85 0.36 1.98 0.700
Practice busyness
Too busy to treat all people requesting appointments 1.00
Provided care to all who requested appointments, but the practice was overburdened 0.69 0.20 2.38 0.561
Provided care to all who requested appointments, but the practice was not overburdened 0.62 0.17 2.32 0.481
Not busy enough- the practice could have treated more patients 0.21 0.04 0.97 0.046
City population (reference: non-government ordinance designated city) 1.22 0.56 2.65 0.623
Patients’ Characteristics
Percentage of patients interested in caries prevention 1.98 1.31 3.01 0.001
Percentage of elderly patients (65 or older) 1.00 0.98 1.02 0.902
Percentage of practice revenue or charges from self-pay 1.00 0.97 1.02 0.914
Dental Procedure Characteristics
Caries risk assessment is done as a routine part of treatment planning (reference: no) 2.59 1.02 6.59 0.046
Percentage of patients receiving blood pressure screening (every 25%) 1.24 1.03 1.49 0.025

The outcome of interest (diet counseling) was coded 1 = provides diet counseling on 20% or more of the practice’s patients; 0 = does not. Hosmer-Lemshow goodness-of-fit, 0.91.