Table 2

 Primary outcomes at three months in adults with recurrent streptococcal A pharyngitis randomised to waiting list (control) or immediate tonsillectomy. Figures are numbers (percentages) of patients

OutcomeControl (n=34)Tonsillectomy (n=36)% difference (95% CI)
Experienced episode of group A streptococcal pharyngitis*8 (24)1 (3)21 (6 to 36)
Experienced episode of pharyngitis with medical consultation14 (41)4 (11)30 (11 to 49)
Experienced acute episode of pharyngitis of any kind19 (56)11 (31)25 (3 to 48)

*Determined by signs and symptoms of acute pharyngitis with positive result of throat culture.