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. 2012 Aug 8;5(2):108–112. doi: 10.5005/jp-journals-10005-1146

Table 6: Mean standard deviation and test of significance of mean value of colony counts in swab samples 1 and 2 (experimental group)

Swab sample in SDA plates      Mean      Std. deviation      Sig. (p-value)     
Pretreatment sample 1      25.37      17.46      0.000*     
Posttreatment sample 2      12.60        9.34          

*(p-value < 0.05): There was a statistically significant difference b/w the two samples