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Table 4 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
BR (N = 98) Control (N = 74) F-value p Value p
Particles 0.3µ 22,726.2 (9404.1)/21933.5 6064.5 (869.0)/6007.0 230.48** .000 .576 10.93** .000
Particles 0.5µ 9107.9 (4279.1)/8195.0 1760.1 (301.6)/1770.0 217.08** .000 .561 11.20** .000
Particles 1µ 2448.9 (1219.0)/2091.0 368.2 (91.1)/354.0 214.39** .000 .558 11.21** .000
Particles 2.5µ 566.2 (309.8)/474.0 61.1 (18.4)/60.5 195.84** .000 .535 11.21** .000
Particles 5µ 59.2 (35.6)/48.5 5.1 (2.3)/5.0 169.99** .000 .500 11.21** .000
Particles 10µ 37.9 (22.4)/30.0 3.2 (1.6)/3.0 178.03** .000 .512 11.25* .000
Temperature (ºC) 23.1 (1.1)/23.0 22.2 (0.8)/22.0 36.11** .000 .175 5.42** .000
Rel. Humidity. (%) 45.3 (7.9)/47.5 42.8 (3.6)/42.0 6.46* .012 .037 4.04** .000
  1. *Significant
  2. **Highly significant