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Table 4 Unconditional regression model for those requiring treatment < 6 months using 1 + RSD and logistic regression model for those requiring treatment < 6 months using self-reported oral condition screening criteria and 1 + RSD

From: An evaluation of the discriminant and predictive validity of relative social disadvantage as screening criteria for priority access to public general dental care, in Australia

Criteria Beta coefficient SE Sig z OR
Model 1
1 + RSD 1.35 0.19 0.000 3.87 (2.65, 5.65)
I have sore gums −0.113 0.529 0.848 0.89 (0.27, 2.85)
I need a scale and clean −1.156 0.086 0.000 0.31 (0.18, 0.53)
I have mouth ulcers −0.013 1.067 0.990 0.98 (0.11,8.22)
I need gum treatment 0.412 1.182 0.598 1.51 (0.32,7.00)
I have a broken denture 1.001 1.540 0.077 2.72 (0.89,8.25)
My denture needs to be fixed −0.121 0.257 0.676 0.88 (0.50,1.56)
I have Halitosis (bad breath) −0.119 0.944 0.911 0.88 (0.11,7.14)
Model 2
1 + RSD 1.302 0.827 0.000 3.67 (2.36,5.71)
I have a broken filling −0.234 0.217 0.393 0.79 (0.46,1.35)
I need a filling 0.141 0.276 0.555 1.15 (0.72,1.84)
I have bleeding gums −0.495 0.546 0.581 0.60 (0.10,3.53)
I have a loose tooth 0.291 0.989 0.693 1.33 (0.31,5.69)
I have a broken tooth −0.049 0.270 0.862 0.95 (0.54, 1.66)
I need an extraction 1.370 1.854 0.004 3.93 (1.56, 9.91)
I have a chipped tooth −0.263 0.379 0.593 0.76 (0.29,2.02)
  1. Sensitivity 81.5%, Specificity 63.4%, Positive Predictive Value 87.2%.
  2. Negative Predictive Value 52.8% (95% CI,) Cut off set at 0.7.
  3. Criteria of having a lost denture, a clicking jaw and a perceived need for a crown and bridge have been dropped from the model due to colllinearity.
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