Table 3

The variation in HSV-2 prevalence by risk group, across the four studies

Study 1Study 2Study 3Study 4
Risk groupGroup size, % (n)HSV-2 prev, % (95% CI)Group size, % (n)HSV-2 prev, % (95% CI)Group size, % (n)HSV-2 prev, % (95% CI)Group size, % (n)HSV-2 prev, % (95% CI)
*In study 3 only 4 risk groups were defined, see methods.
132.4 (440)0.7 (0.1 to 2.0)9.0 (73)4.1 (0.9 to 11.5)21.7 (503)4.8 (3.1 to 7.0)23.5 (112)2.7 (0.6 to 7.6)
226.3 (358)2.0 (0.8 to 4.0)21.3 (172)7.6 (4.1 to 12.6)37.7 (874)7.9 (6.2 to 9.9)11.6 (55)5.5 (1.1 to 15.1)
319.1 (260)6.2 (3.6 to 9.8)33.8 (273)13.2 (9.2 to 17.2)36.6 (848)16.0 (13.6 to 18.5)13.7 (66)13.6 (6.4 to 24.3)
414.1 (191)14.1 (9.2 to 19.1)20.2 (163)27.0 (20.2 to 33.8)4.0 (92)53.3 (42.6 to 63.7)25.4 (121)28.1 (20.3 to 37.0)
58.1 (110)47.3 (37.9 to 56.6)15.7 (127)67.7 (59.6 to 75.8)–*–*25.6 (122)63.9 (54.7 to 72.4)
Total100 (1359)7.7 (6.4 to 9.3)100 (808)22.5 (19.6 to 25.5)100 (2317)12.0 (10.7 to 13.3)100 (476)26.7 (22.8 to 30.9)