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Table 6 Comparison between explanatory variables and the indication of any type of treatment (outcome) assessment by FDI and CARS criteria

From: Comparison of two clinical approaches based on visual criteria for secondary caries assessments and treatment decisions in permanent posterior teeth

Explanatory variables

Unadjusted PR

(95%CI)

p

Adjusted PR

(95%CI)

P

Variables related to the patient (3rd level)

    

Sex (ref.: male)

  

*

 

 Female

1.10 (0.82–1.48)

0.512

  

Age (ref.: up to 30 yrs-old)

  

*

 

 More than 30 yrs-old

0.95 (0.68–1.32)

0.751

  

DMF-T (quant. variable)

1.01 (0.99–1.03)

0.233

*

 

Caries activity (ref.: no)

    

 Yes

1.39 (1.05–1.85)

0.023

1.38 (1.07–1.76)

0.012

Variables related to the restored tooth (2nd level)

    

Type of teeth (ref.: Molars)

  

*

 

 Premolars

1.17 (0.91–1.51)

0.228

  

Dental arch (ref.: upper)

  

*

 

 Lower

0.90 (0.71–1.14)

0.373

  

Number of surfaces restored (ref.: 1 surface)

    

 2 surfaces

1.98 (1.51–2.60)

< 0.001

1.78 (1.35–2.33)

< 0.001

 3 or more surfaces

3.14 (2.34–4.21)

< 0.001

2.58 (1.92–3.47)

< 0.001

Dental material (ref.: amalgam)

    

 Composite resin

2.52 (1.91–3.33)

< 0.001

1.96 (1.48–2.60)

< 0.001

Variables related to the clinical evaluation (1st level)

    

Diagnostic method (ref.: CARS)

    

 FDI system

4.24 (3.18–5.66)

< 0.001

4.20 (3.15–5.61)

< 0.001

Order of examinations (ref.: 1st examination)

    

 2nd examination

1.13 (0.90–1.42)

0.280

1.12 (0.89–1.40)

0.331

  1. PR = prevalence ratio; 95%CI = 95% confidence intervals; DMF-T = decayed, missed and filled permanent teeth
  2. *Variables not included in the final model