Description of the data source, numerator, denominator, survey questions, and other relevant details about the national estimate.
Data are collected from regional infertility prevention infrastructure laboratory reports. This measure tracks only tests that are specific for Chlamydia trachomatis infection. The number of positive cases is based on test results from persons routinely screened. Routine screening is defined by each clinic. In some clinics, all patients are universally screened. In others, routine screening is done selectively based on clinical findings or behavioral risk factors.
Chlamydia positivity data on females screened in family planning clinics are included when the number of females aged 15-24 years tested from a state was greater than or equal to 500. The baseline measure is calculated median state-specific positivity. Medians are reported when at least 20 states met the inclusion criteria.
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