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Table 6 Correlational analysis. Potential Regression Models, predictors of the number of particles of each size, from the relative humidity. Initial situation. (N = 98)

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

Predictive variable R2 adjust Contrast test Coefficient SE
Value p-value
Particles 0.3µ .998 219.03** .0000 2.53  ± 0.427
Particles 0.5µ .998 207.30** .0000 2.31  ± 0.432
Particles 1µ .996 164.21** .0000 1.96  ± 0.452
Particles 2.5µ .994 125.44** .0000 1.57  ± 0.474
Particles 5µ .975 61.69** .0000 0.93  ± 0.568
Particles 10µ .972 57.95** .0000 0.82  ± 0.537
  1. **Highly significant