Table 3 Adjusted regression analysis. TRMCI regressed on socio-demographic features, and clinical findings. Adjusted odds ratios (OR) and 95% confidence intervals (CI)

OR (95%CI)

P-value

District of residence

Monduli

Longido

1

2.5 (1.7–3.5)

< 0.001

Ethnicity

Maasai

Non Maasai

1

0.02 (0.002–0.15)

< 0.001

Region of birth

Others

Arusha

1

3.0 (0.4–25.4)

0.30

Mother’s education

Low (≤ primary school)

High (≥ secondary school)

1

0.2 (0.02–1.3)

0.09

Father’s education

Low (≤ primary school)

High (≥ secondary school)

1

0.3 (0.1–1.2)

0.09

Dental erosion

Grade 0

Grade > 0

1

0.7 (0.5–1.1)

0.08