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Table 1 Exploratory analysis. Adjustment to statistical normality of the variables

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

Status Variable Exploration: Form   KS Test  
   Asimetry Curtosis Value p-value
CR Particles 0.3µ 1.00 2.26 0.09 NS .515
(N = 74) Particles 0.5µ 0.49 0.49 0.06 NS .927
  Particles 1µ 0.64 0.18 0.08 NS .668
  Particles 2.5µ 0.72 1.92 0.09 NS .524
  Particles 5µ 0.27  − 0.08 0.11 NS .288
  Particles 10µ 0.65 0.47 0.22** .002
  Temperature (ºC)  − 0.35  − 1.30 0.27** .000
  Relative humidity (%) 0.67  − 0.76 0.17 * .025
AR Particles 0.3µ 0.45  − 0.43 0.08 NS .549
(N = 98) Particles 0.5µ 1.20 1.05 0.12 NS .101
  Particles 1µ 1.29 1.20 0.16 * .010
  Particles 2.5µ 1.28 0.91 0.18** .003
  Particles 5µ 1.42 2.55 0.14 * .042
  Particles 10µ 1.95 5.19 0.16 * .013
  Temperature (ºC)  − 0.09  − 0.16 0.15 * .019
  Relative humidity (%)  − 0.84  − 0.18 0.20 NS .001
BR Particles 0.3µ 0.32  − 0.52 0.07 NS .696
(N = 98) Particles 0.5µ 0.75 0.21 0.10 NS .274
  Particles 1µ 0.78  − 0.09 0.13 NS .062
  Particles 2.5µ 0.94 0.43 0.13 NS .083
  Particles 5µ 1.04 0.42 0.14 NS .052
  Particles 10µ 1.09 0.36 0.15 * .019
  Temperature (ºC)  − 0.02  − 0.40 0.15 * .024
  Relative humidity (%)  − 0.81  − 0.09 0.19** .001
  1. NS non-significant deviance (p > .05); the variable is normally distributed
  2. *Significant but slight deviation (p < .05); the variable tends towards the normal pattern
  3. **Significant severe deviation (p < .01); the variable does not conform to normality