Table 2.

Pairwise inter group comparison of mean failure load between four groups using Tukey’s post hoc test

Tukey’s post hoc test for pairwise comparison
Group	Comparison Group	Mean Difference	P value, Significance
Group A	Group B	279.76	P<0.001**
	Group C	20.3	P = 0.762 (NS)
	Group D	258.76	P<0.001**
Group B	Group C	300.06	P<0.001**
	Group D	21.0	P = 0.713 (NS)
Group C	Group D	279.06	P<0.001**

P>0.05 - no significant difference (NS), *P<0.05 - significant;

^**P<0.001 - highly significant.