Table 1

Factors associated with incidence of throat gonorrhoea (incidence defined as one event in the case of a run of events)

Characteristicn (%)EventsPYIncidence rateCrude IRR95% CIP value*
Age (years), median (IQR)30 (26–33)1.020.94 to 1.110.614
Oropharyngeal gonorrhoea in the past 3 months
 No78 (78)101757.661 (ref)
 Yes22 (22)2542.871.040.30 to 3.580.952
HIV status and PrEP use
 HIV negative not on PrEP89 (89)22112.041 (ref)
 HIV negative on PrEP9 (9)122050.690.490.12 to 1.950.312
 HIV positive†2 (2)00.50N/AN/AN/A
Weekly sexual practices
 Number of kissing partners‡1.081.03 to 1.120.001
 Number of penile-oral sex partners‡1.071.01 to 1.140.016
 Number of insertive rimming partners‡1.110.96 to 1.290.175
  • *P values from Poisson regression.

  • †The IRR for the two men living with HIV were not calculated because no incident oropharyngeal gonorrhoea cases were observed.

  • ‡Number of partners for each sexual practice assessed as a continuous variable. Data reflect change in IRR per one additional partner.

  • CI, confidence intervals; HIV, human immunodeficiency virus; IQR, interquartile range; IRR, incidence rate ratio; PrEP, pre-exposure prophylaxis; PY, person years of follow-up.