Methods: We compared clindamycin susceptibilities of SA isolated from patients with and without cystic fibrosis (CF) using hospital microbiology data.
Patients with CF were primarily identified using CF registry data.
We evaluated all patients who had SA isolated at the Children's Healthcare of Atlanta microbiology laboratory during May 2004–May 2005.
We performed antimicrobial susceptibility testing using broth microdilution and performed D-zone testing for ICR in accordance with the Clinical Laboratory Standards Institute (CLSI) document M100-S16.
Proportions were compared using a 2-sided Pearson's Chi-square test or Fisher's exact test to assess for significance.