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 |