Table 2 Summary of between-treatment differences in adjusted mean TPI score (ITT population)

From: A randomised controlled trial to evaluate the plaque removal efficacy of sodium bicarbonate dentifrices in a single brushing clinical model

Comparison Differencea (95% CI) % diffb p-value
67% NaHCO3 + herbs vs 67% NaHCO3/no herbs −0.01 (−0.07, 0.05) 1.3 0.6464
vs 62% NaHCO3 + herbs −0.02 (−0.08, 0.04) 1.4 0.6147
vs 0% NaHCO3/no herbs −0.21 (−0.27, −0.15) 23.1 <0.0001
67% NaHCO3/no herbs vs 62% NaHCO3 + herbs 0.00 (−0.06, 0.06) 0.1 0.9653
vs 0% NaHCO3/no herbs −0.20 (−0.26, −0.14) 21.6 <0.0001
62% NaHCO3 + herbs vs 0% NaHCO3/no herbs −0.20 (−0.26, −0.14) 21.4 <0.0001
  1. Bolded p-values indicate statistical significance
  2. aDifference is adjusted mean; a negative difference favours first named treatment
  3. bPercent difference: second named treatment taken as reference for percent difference calculation ((difference/reference) × 100%)