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Table 3 Inferential analysis. Intergroup comparison of the variables recorded. During vs. control

From: Air particulate concentration during orthodontic procedures: a pilot study

Variables Mean (SD)/Median ANOVA Effect size: R2 Mann–Whitney test
AR (N = 98) Control (N = 74) F-value p Value p
Particles 0.3µ 17,558.5 (7694.8)/16606.5 6064.5 (869.0)/6007.0 163.31** .000 .490 10.63** .000
Particles 0.5µ 7715.2 (4092.9)/6571.5 1760.1 (301.6)/1770.0 155.80** .000 .478 11.11** .000
Particles 1µ 2077.7 (1169.6)/1728.0 368.2 (91.1)/354.0 157.14** .000 .480 11.20** .000
Particles 2.5µ 471.0 (283.4)/377.0 61.1 (18.4)/60.5 154.15** .000 .476 11.21** .000
Particles 5µ 40.9 (25.2)/33.5 5.1 (2.3)/5.0 148.21** .000 .468 11.16** .000
Particles 10µ 27.2 (17.6)/24.0 3.2 (1.6)/3.0 137.32** .000 .447 11.23** .000
Temperature (ºC) 22.7 (1.0)/23.0 22.2 (0.8)/22.0 13.88** .000 .075 3.61** .000
Rel. humidity. (%) 46.3 (8.0)/48.2 42.8 (3.6)/42.0 12.10** .001 .066 4.66** .000
  1. **Highly significant