Table 2

Studies of genital wart (GW) incidence

Study	Country, year	Interval for defining recurrence (months)	Age and sex	Episode type	Annual incidence/100 000 population (95% CI)^*
Present^†	England, 2008–2009	2 (base case)	All	New	157
	England, 2008–2009	2 (base case)	All	Recurrent	133
	Sensitivity analyses	3	All	Recurrent	116
		4	All	Recurrent	105
		6	All	Recurrent	91
Cassell et al19	UK, 1998–2000	Not reported	All	All	307.6 (305.5 to 309.8) males
Cassell et al19	UK, 1998–2000	Not reported	All	All	236.2 (234.2 to 238.4) females
Other studies of GW incidence
Castellsagué et al20	Spain, 2005	Not reported	14–64 years	New	117.86
				Recurrent	42.57
				Resistant	21.72
Hillemanns et al21	Germany, 2005	Not reported	14–65-year-old females	New	114 (109 to 119)
Hillemanns et al21	Germany, 2005	Not reported	14–65-year-old females	Recurrent	35 (32 to 37)
Lukasiewicz et al22	France, 2000	Not reported	All	All	107
Pirotta et al23	Australia, 2000–2006	Not reported	All	All	219 (188 to 249)^‡
Marra et al24	Canada, 2006	12	>15 years	All	126^‡
Hoy et al25	USA, 2004	12	All	All	120^‡
Insigna et al26	USA, 2000	12	All	All	165 (males) ^‡
Insigna et al26	USA, 2000	12	All	All	167 (females)

* 95% CI are not presented for studies that did not report them.
† 95% CIs calculated for the rates are not reported because they were too narrow to be a meaningful representation of uncertainty.
‡ Adapted from reported figures per 1000 population or person-years. Methods suggest denominator equivalent to population.