Reasons for clinical failures by study group

ReasonNo. of subjects in study group:
Cephalexin (n = 13)Placebo (n = 8)
Nurse practitioner thought abscess was not healing as expected83
Patient was prescribed antibiotics for new, nonadjacent abscess02
Patient returned to emergency department complaining of worsening abscess20
Patient started on antibiotics for unrelated medical condition during study period01
Primary care provider urged patient to withdraw from study due to HIV infection10
Loss to follow-up22