Table 3.

Comparison of log CFU between three groups for Staphylococcus aureus

Groups (time of exposure in microwave)	Log CFU	Difference between groupsa
	Mean ± SD	Groups compared	Mean difference	p value
Control (no exposed) “SC”	4.99 ± 0.34	Control–I “SC”–“SI”	1.12	<0.01, S
Group I (5 min exposure) “SI”	3.87 ± 0.11	Control–II “SC”–“SII”	1.58	<0.01, S
Group II (6 min exposure “SII”	3.41 ± 0.96	I–II “SI”–“SII”	0.46	<0.01, S
Group III (7 min exposure) “SIII”	0.0

Kruskal–Wallis ANOVA, x² = 35.9

^aMann–Whitney test