| Logit (p) = β0 + β1 (toothbrushing > 1/day) + β2 (electric toothbrush) + β3 (fluoridated toothpaste) + β4 (high-sugar diet) + β5 (night-time feeding) + β6 (night-time feeding > 12 months) + β7 (>5 meals/day) + β8 (brushing start 1–2 years) + β9 (brushing start 2–3 years) + β10 (brushing start > 3 years) |