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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