Table 4. Summary of impact of screening on population prevalence of Chlamydia infections as computed by the model.

		Chlamydia prevalence				Decline in Chlamydia prevalence
		at start of screening	after 1 year of screening	after 3 years of screening	after 10 years of screening	after 3 years of screening compared with prevalence at start of screening	after 10 years of screening compared to no screening
year		2008	2009	2011	2018
national	women	2.5%	1.8%	1.6%	1.5%	0.92pp	0.89pp
	men	1.5%	1.1%	0.9%	0,9%	0.56pp	0.55pp
urban	women	3.8%	2.8%	2.4%	2.6%	1.45pp	0.82pp
	men	3.0%	2.2%	1.9%	2.1%	1.11pp	0.68pp

Declines are measures in percentage points (pp), i.e. the difference between two percentages. For comparison, the prevalence estimates derived from the positivity measures in the CSI program [13] are presented in Table 5.