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LSD post hoc test to confirm the significant difference in colony count among four control groups
| Group (I) | Group (J) | Mean difference (I-J) | p value |
|---|---|---|---|
| Control 1 | Control 2 | 91.00 | 0.000 |
| Control 3 | 74.00 | 0.000 | |
| Control 4 | 161.00 | 0.000 | |
| Control 2 | Control 3 | -17.00 | 0.016 |
| Control 4 | 70.00 | 0.000 | |
| Control 3 | Control 4 | 87.00 | 0.000 |
