Table 7. Meibomian glands plugging frequency in the two group.
| Groups | 1st visit | 2nd visit | 3rd visit | P (Chi-square) | 1st to 3rd visit difference | P (Mann-Whitney) |
| Azitromycin | 96% | 68% | 32% | <0.01 | 64% | 0.039 |
| Doxycycline | 96% | 70% | 14% | <0.01 | 82% |
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