Table 1 Comparison among four samples on all weeks of noise measurement, Cachoeira do Sul, 2015

From: Assessment of noise intensity in a dental teaching clinic

  BT 1 h 2 h 3 h
Week 1 67.67 82.27 81.07 72.53
Week 2 66.84 83.69 82.9 70.01
Week 3 66.44 84.97 79.19 72.85
Week 4 68.95 77.96 83.45 69.56
Week 5 65.53 82.14 80.5 71.54
Week 6 68.12 83.18 78.47 73.44
Week 7 66.75 89.97 84.6 50.89
Week 8 69.12 75.5 77.88 75.67
Week 9 67.01 81.9 90.02 72.11
Week 10 67.5 82.19 71.9 72.02
Mean 67.39 82.38a,b 80.99a,b 70.06
s.d. 1.119 3.857 4.789 6.950
  1. Abbreviations: ANOVA, analysis of variance; BT, basal time.
  2. Values are means±s.d. BT (n=10), 1 h after (n=10), 2 h after (n=10) and 3 h after (n=10). Weeks 1 to 10 represent each moment of measurement; statistical analysis by one-way ANOVA followed by Tukey’s post hoc test. Symbols represent the comparison between groups by post hoc analysis: *P<0.05 compared to BT measurement (one-way ANOVA, F(3.36)=29.28; P<0.0001; Tukey’s post hoc test).
  3. aP<0.05 when 1 and 2 h were compared to BT.
  4. bP<0.05 when 1 and 2 h were compared to 3 h after.