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. Author manuscript; available in PMC: 2012 Jul 30.
Published in final edited form as: Sex Transm Dis. 2011 Jun;38(6):503–509.

TABLE 3.

Incidence of Chlamydia trachomatis Infection

Prevalence
at Baseline
(%)
Baseline to
12 mo (per
100 Person
Years)
12–24 mo
(per 100
Person
Years)
Overall 2.9 2.6
  Males 3.4 2.0 2.0
  Females 7.8 4.6 3.6
Age
  18–24 yr 4.8 3.7 3.5
  25–34 yr 4.3 2.3 1.9
  ≥35 yr 6.1 2.3 1.9
Marital status
  Married/living with partner 5.8 2.6 2.1
  Never married/single 4.0 3.2 3.0
  Divorced/separated/widowed 5.8 3.5 4.3
Education
  <1 yr 6.5 3.7 2.1
  1–6 yr 5.7 2.6 2.3
  7–12 yr 4.6 2.9 2.6
  >12 yr 4.7 3.9 3.8
No. partners (last 3 mo)
  0–1 5.4 2.9 2.5
  2+ 4.9 3.0 3.0
Countries
  China 9.3 4.0 3.1
  India 0.9 0.9 0.5
  Peru 4.8 3.7 3.1
  Russia 4.9 4.6 4.8
  Zimbabwe 3.8 2.5 2.8