Table 1.

Person-years by vaccination status and study population characteristics for (a) zoster incidence analyses and (b) post-herpetic neuralgia (PHN) analyses.

Characteristic	(a) Zoster incidence analyses person years:a		(b) PHN analyses person years:a
	Vaccinatedb (137,968py)	Unvaccinatedb (909,474 py)	Vaccinatedc (52,861py)	Unvaccinatedc (526,055py)
Sex
Male	64,925	424,381	24,472	242,812
Female	73,044	485,093	28,389	283,243
Time since vaccination
Unvaccinated	–	909,474	–	526,055
Up to 1 year since vaccination	75,707	–	39,172	–
1 to <2 years since vaccination	47,954	–	13,689	–
2–3 years since vaccination	14,307	–	04	–
Ethnicity
White	81,378	527,387	30,286	297,068
South Asian	1275	11,318	436	5586
Black	615	6751	240	3428
Other	580	5617	212	3093
Mixed	149	1277	55	672
Not stated	6480	46,281	2,512	26,740
Missing	47,492	310,843	19,120	189,467
Cohort
Routine (born 1940–1946)	77,319	540,007	30,631	313,448
Catch-up (born 1933–1939)	60,649	369,467	22,230	212,606
IMD status
1	19,903	127,120	7475	71,164
2	16,305	115,308	5849	62,392
3	14,603	104,251	5336	57,082
4	10,813	81,814	3879	44,049
5	6772	54,584	2463	28,871
Missing	69,573	426,397	27,859	262,497
History of zoster
History	14,784	88,358	5753	51,730
No history	123,185	821,116	47,108	474,325
Influenza vaccination
Given the previous year	127,358	653,297	48,569	379,111
Not given the previous year	10,610	256,177	4292	146,943

^aExcludes the person-time in the 6 weeks after vaccination.

^bMedian follow-up time: vaccinated = 1.42 person-years (range: 0.003–2.9); unvaccinated = 1.99 person-years (range: 0.003–3.0).

^cMedian follow up time: vaccinated = 0.80 person-years (range: 0.003–1.88); unvaccinated = 1.69 person-years (range 0.003–2.0).

^dOnly includes follow-up of zoster to the end of year 2, to allow detection of PHN in the year after incident zoster.