Table 7 Odds ratio (95 % CI) for negative impact on different OHRQoL domains from multivariate logistic regression analysis final model^a

Oral symptoms

  FT/ft

   0

-

Reference

   1

0.220

0.383

0.083

1.776

   2 or 3

0.056

0.169

0.027

1.049

   More than 4

0.017

0.053

0.005

0.587

Oral functions

  DMFT/dmft

   0

-

Reference

   1

0.436

1.676

0.457

6.155

   2 or 3

0.036

2.785

1.166

8.957

   More than 4

0.028

4.428

1.261

25.785

  Non-cavitated lesions

   0

-

Reference

   1

0.713

0.864

0.396

1.886

   2 or 3

0.018

0.421

0.205

0.864

   More than 4

0.072

0.509

0.244

1.063

  Mother’s education

   High school or less

-

Reference

   More than high school

0.445

0.764

0.383

1.524

   College

0.020

0.471

0.249

0.889

   Post-college

0.832

0.789

0.088

7.060

Emotional well-being

  MT/mt

   0

-

Reference

   1

0.346

0.651

0.266

1.591

   2 or 3

0.034

1.234

0.061

0.897

   More than 4

0.025

1.446

1.072

2.759

  Fissure sealants

   0

-

Reference

   1

0.254

1.450

0.766

2.745

   2 or 3

0.133

1.649

0.859

3.168

   More than 4

0.049

0.538

0.276

0.949

  Mother’s education

   High school or less

-

Reference

   More than high school

0.018

0.466

0.248

0.878

   College

<0.001

0.286

0.158

0.518

   Post-college

0.549

0.597

0.110

3.224

Social well-being

  Mother’s education

   High school or less

-

Reference

   More than high school

0.927

1.029

0.553

1.917

   College

0.003

0.398

0.217

0.731

   Post-college

0.787

1.259

0.237

6.689