# Table 4 Unconditional regression model for those requiring treatmentâ€‰<â€‰6Â months using 1â€‰+â€‰RSD and logistic regression model for those requiring treatmentâ€‰<â€‰6Â months using self-reported oral condition screening criteria and 1â€‰+â€‰RSD

Criteria

Beta coefficient

SE

Sig z

OR

Model 1

1â€‰+â€‰RSD

1.35

0.19

0.000

3.87 (2.65, 5.65)

I have sore gums

âˆ’0.113

0.529

0.848

0.89 (0.27, 2.85)

I need a scale and clean

âˆ’1.156

0.086

0.000

0.31 (0.18, 0.53)

I have mouth ulcers

âˆ’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

âˆ’0.121

0.257

0.676

0.88 (0.50,1.56)

âˆ’0.119

0.944

0.911

0.88 (0.11,7.14)

Model 2

1â€‰+â€‰RSD

1.302

0.827

0.000

3.67 (2.36,5.71)

I have a broken filling

âˆ’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

âˆ’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

âˆ’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

âˆ’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.