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Table 5 Inferential analysis. Intra-group comparison of variables recorded. During vs. initial

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

Variables Mean (SD)/median ANOVA Effect size: R2 Mann–Whitney test
BR (N = 98) AR (N = 98) F value p Value p
Particles 0.3µ 22,726.2 9404.1)/21933.5 17,558.5 (7694.8)/16606.5 127.33** .000 .568 8.52** .000
Particles 0.5µ 9107.9 (4279.1)/8195.0 7715.2 (4092.9)/6571.5 33.47** .000 .257 5.99** .000
Particles 1µ 2448.9 1219.0)/2091.0 2077.7 (1169.6)/1728.0 26.88** .000 .217 4.93** .000
Particles 2.5µ 566.2 (309.8)/474.0 471.0 (283.4)/377.0 20.92** .000 .177 4.34** .000
Particles 5µ 59.2 (35.6)/48.5 40.9 (25.2)/33.5 39.89** .000 .291 5.76** .000
Particles 10µ 37.9 (22.4)/30.0 27.2 (17.6)/24.0 35.46** .000 .268 5.86** .000
Temperature (ºC) 23.1 (1.1)/23.0 22.7 (1.0)/23.0 39.19** .000 .288 5.38** .000
Rel. humidity. (%) 45.3 (7.9)/47.5 46.3 (8.0)/48.2 35.36** .000 .267 5.37** .000
  1. **Highly significant