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. Author manuscript; available in PMC: 2021 Jun 1.
Published in final edited form as: Sex Transm Dis. 2020 Jun;47(6):355–360. doi: 10.1097/OLQ.0000000000001168

Table 2.

Chlamydia and gonorrhea incidence among black men who have sex with men in Atlanta without prevalent infection over 12 months, stratified by infection sitea

Infections Person-years IR (95% CI)b
Chlamydia 43 349.1 12.3 (9.1, 16.6)
 Rectal 33 363.6 9.1 (6.5, 12.8)
 Urethral 14 397.3 3.5 (2.1, 6.0)
Gonorrhea 21 370.1 5.7 (3.7, 8.7)
 Rectal 17 377.4 4.5 (2.8, 7.3)
 Urethral 7 404.5 1.7 (0.8, 3.6)
Chlamydia or gonorrheab 55 317.6 17.3 (13.3, 22.3)
 Rectal 44 321.9 13.7 (10.2, 18.4)
 Urethral 19 371.4 5.1 (3.3, 8.0)

Abbreviations: IR, incidence rate

a

Incidence rate per 100 person-years.

b

First occurrence of either laboratory-confirmed chlamydia, gonorrhea, or both. Three participants were co-infected with chlamydia and gonorrhea at time of diagnosis (first occurrence of outcome).