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. Author manuscript; available in PMC: 2018 Dec 1.
Published in final edited form as: Arthritis Rheumatol. 2017 Nov 9;69(12):2351–2358. doi: 10.1002/art.40236

Table 2.

Giant cell arteritis incidence rates by herpes zoster event.

MarketScan Medicare
Herpes zoster GCA cases Person-years IR (/10,000 PY) GCA cases Person-years IR (/10,000 PY)
Complicated 32 68,388 4.68 (3.31, 6.62) 27 29,377 9.19 (6.30, 13.40)
Uncomplicated 97 382,734 2.53 (2.08, 3.09) 80 138,622 5.77 (4.64, 7.18)
None 4,031 33,273,538 1.21 (1.17, 1.25) 1,675 4,451,219 3.76 (3.59, 3.95)

Abbreviations: GCA = giant cell arteritis, IR = incidence rate, PY = person-years