Table 2

Odds ratios for quinsy by exposure to antibiotics, following different types of RTI.

ExposureNumber of case eventsCrude odds ratio (95% CI)Adjusted odds ratio (95% CI)a
No antibiotics after event231.01.0
Antibiotics given after all events1691.3 (0.9 to 2.1)1.2 (0.7 to 1.8)
Antibiotics given after ‘tonsillitis’810.8 (0.4 to 1.7)0.6 (0.3 to 1.3)
Antibiotics given after ‘sore throat/pharyngitis’881.3 (0.7 to 2.3)1.2 (0.7 to 2.2)
  • a Adjusted for age, sex, smoking, and lung disease at patient level and clustering at practice level. RTI = respiratory tract infection.