Analysis of the sex ratio of reported gonorrhoea incidence in Shenzhen, China

Xiong, Mingzhou; Lan, Lina; Feng, Tiejian; Zhao, Guanglu; Wang, Feng; Hong, Fuchang; Wu, Xiaobing; Zhang, Chunlai; Wen, Lizhang; Liu, Aizhong; Best, John McCulloch; Tang, Weiming

Stratified analysis was used to analyse patient demographics, which were separated by gender. Untested rate, true-positive rate, false-negative rate and unreported rate of gonorrhoea, as well as reported gonorrhoea incidence sex ratio and true diagnosis sex ratio, were calculated for all participants. The definitions of the various outcomes are listed below: 1. Untested: Participants who were infected with NG and confirmed by reference test, but were not given the NG test in clinics. 2. True positive: The true-positive participants who were diagnosed with gonorrhoea in clinics. 3. False negative: Participants who were infected with NG according to the reference test, but had a negative result in clinics. 4. Unreported: Participants who were diagnosed with gonorrhoea in clinics but not reported to CISDCP on time. 5. Reported gonorrhoea incidence sex ratio: The sex ratio (male vs female) of participants who have been diagnosed with gonorrhoea and reported to CISDCP by physicians. 6. True diagnosis sex ratio: The sex ratio (male:female) of participants with positive NG results on reference test. This excludes the influences of untested rate, true-positive rate, false-negative rate and unreported rate.