Table 5 Multiple comparisons within group analysis by Dunnet’ t-Test

From: Protection of wear resistance behaviour of enamel against electron beam irradiation

 

I

J

Mean difference (I–J)

Std error

Sig.a

95% confidence interval

Oxygen (atomic %) (<control)a

Radiation control

Control

−4.4*

0.65

<0.001

−2.820

 

Virgin coconut oil

Control

−1.2

0.65

0.131

0.407

 

Vitamin E oil

Control

−0.92

0.65

0.240

0.693

 

Curcumin

Control

−0.89

0.65

0.257

0.730

Phosphorous (atomic %) (<control)a

Radiation control

Control

−1.46*

0.43

0.011

−0.404

 

Virgin Coconut oil

Control

1.93

0.43

1.00

2.992

 

Vitamin E oil

Control

1.77

0.43

1.00

2.83

 

Curcumin

Control

0.48

0.43

0.980

1.54

Calcium (atomic %) (<control)a

Radiation control

Control

−1.09

0.98

.340

1.32

 

Virgin coconut oil

Control

2.94

0.98

1.000

5.36

 

Vitamin E oil

Control

2.4

0.98

0.999

4.78

 

Curcumin

Control

0.61

0.98

0.939

3.03

  1. *The mean difference is significant at the 0.05 level
  2. aDunnett t-tests treat one group as a control, and compare all other groups against it
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