Gunn et al,200450 | Population based; San Diego County, California: people with reported cases of gonorrhoea | 6243 M, 4747 F | 1/1995–12/2001: ⩾2 gonococcal infections for same name and DOB within 30–365 days time frame and trailing 12-month repeats | NA | 5.0 (311/6243) | NA | GONORRHEA: 4.1 (196/4747) |
Lee et al,200451 | STD clinic based; Portsmouth, UK: men and women diagnosed as having chlamydia | 214 M, 861 F | 9/1999–8/2000: subsequent chlamydia at any visit within a 3-year follow-up period | 16.4 (10/61) | NA | NA | CHLAMYDIA: 20.5(46/224) |
Mehta et al,200352 | STD clinic based; Baltimore, Maryland: heterosexuals ⩾12 years diagnosed as having gonorrhoea | 1717 M, 6610 F | 1/1994–10/1998: first incident gonococcal infection at least 3 months after initial visit to a maximum of 4.8 years | NA | 11.9 (788/6610) | NA | GONORRHOEA: 7.1 (122/1717) |
Rietmeijer et al,200253 | STD clinic based; Denver, Colorado: patients screened for chlamydia more than once | 2097 M, 1470 F | 1/1997–6/1999: more than one positive chlamydia test >30 days apart | 18.3 (56/306) | NA | NA | CHLAMYDIA: 23.2 (43/185) |
Gunn et al,200054 | STD clinic based; San Diego County, California: patients with a new STD or a history of STD in the past 5 years | 2612 M | 2–7/1995: subsequent STD reported by a client or communicable disease investigator between 45 and 365 days after treatment | NA | NA | 6.3 (39/620) | CHLAMYDIA/GONORRHOEA: 6.3 (15/239) |
Thomas et al,200055 | STD clinic based; Step County, North Carolina: patients diagnosed as having chlamydia and/or gonorrhoea | 626 M, 574 F | 8/1992–1/1994: subsequent chlamydial and/or gonococcal infection in clinic or private practice >14 days and <17 months after index infection | NA | NA | 28.3 (177/626) | GONORRHOEA/CHLAMYDIA: 19.0 (109/574) |