Figure 1
From: Chlamydia and gonorrhoea in pregnant Batswana women: time to discard the syndromic approach?
Receiver Operating Characteristics (ROC) curves for three levels of risk scores (sociodemographic, clinical and microscopy risk scores). The risk scores are based on multiple logistic regression analyses and used as a screening tool to identify N gonorrhoeae and C trachomatis. The risk scores are applied retrospectively on 703 antenatal care attendees in Gaborone, Botswana.