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Table 4 Proportion of azithromycin-resistant (AzmR) and macrolide-inducible clindamycin resistant (iMLSB) S. aureus isolates over time and between treatment arms

From: Short-term increase in prevalence of nasopharyngeal carriage of macrolide-resistant Staphylococcus aureus following mass drug administration with azithromycin for trachoma control

Survey Total Resistant (%) Crude OR (95% CI) p-value Adjusted ORa (95% CI) p-value
Overtime
 AzmR
  CSS-1 102 37 (36.3) 1   1  
  CSS-2 161 142 (88.2) 13.13 (7.67–22.48) <0.001 13.01 (7.77–21.80) <0.001
  CSS-3 30 25 (83.3) 8.78 (1.11–69.25) 0.039 8.56 (1.03–71.34) 0.047
 iMLSB
  CSS-1 102 24 (23.5) 1   1  
  CSS-2 161 128 (79.5) 12.61 (8.33–19.09) <0.001 12.52 (7.90–19.85) <0.001
  CSS-3 30 20 (66.7) 6.50 (3.14–13.44) <0.001 6.39 (3.22–12.66) <0.001
Between treatment arms
 AzmR
  1× 25 6 (24.0) 1   1  
  3× 30 25 (83.3) 15.83 (1.97–127.01) 0.009 15.88 (1.99–126.54) 0.009
 iMLSB
  1× 25 3 (12.0) 1   1  
  3× 30 20 (66.7) 14.67 (2.43–88.41) 0.003 18.83 (3.22–110.05) 0.001
  1. aadjusted for age and gender