Table 2

 Prevalence of chlamydia in specimens from study participants in first four practices

CharacteristicNo of specimensPositivePrevalence (%) (95% CI)
Prevalence estimates adjusted to take into account 2:1 sampling of 16–25 and 26–39 year olds and clustered nature of data.
Men
    16–25 years219115.0(2.8 to 8.9)
    26–39 years8200
    All men*301112.1(1.2 to 3.8)
Women
    16–25 years309227.2(4.8 to 10.7)
    26–39 years13010.8(0.1 to 5.2)
    All women*439233.2(2.2 to 5.1)
Age group
    16–25 years528336.3(4.5 to 8.7)
    26–39 years21210.5(0.1 to 3.2)
Total740342.8(2.0 to 4.0)