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Table 3 Multiple comparison for salivary pH mean difference from T0 to T3

From: Salivary pH changes under the effect of stainless steel versus elastomeric ligatures in fixed orthodontic patients: a single-center, randomized controlled clinical trial

Time T1 T2 T3 p value
Comparison T0–T1 T0–T2 T0–T3 T0–T1 T0–T2 T0–T3
Mean difference 0.03 0.02 0.02 0.08NS 0.00* 0.00*
P value 0.70 0.02 0.04 0.00* 0.00* 0.00*
  1. T0 baseline, T1 2 weeks, T2 6 weeks and T3, 12 weeks from T0, NS indicates nonsignificant
  2. *Significant p value < 0.05