Table 4

Minimum inhibitory concentration (MIC) differences of various antibiotics for oral administration (group 1a) and topical use (group 1b) against Propionibacterium acne isolates

AntibioticsGroup 1a (n=67)Group 1b (n=26)P value
Azithromycin0.032 (0.016–0.205)0.032 (0.018–0.117)0.652
Clarithromycin0.047 (0.02–0.125)0.047 (0.016–0.125)0.912
Clindamycin0.047 (0.023–0.125)0.047 (0.023–0.5)0.705
Erythromycin0.032 (0.021–0.102)0.032 (0.016–0.125)0.950
Doxycycline0.125 (0.047–0.38)0.158 (0.06–0.283)0.786
Tetracycline0.25 (0.094–0.38)0.315 (0.094–0.5)0.266
  • The values were MIC (μg/mL) and were expressed as median (IQR).