Effekten var mere udtalt i den yngre aldersgruppe (60 til 69 år), hvor effektiviteten af ZOSTAVAX på BOI- scoren for HZ- smerter var 66% sammenlignet med 55% hos patienter ≥ 70 år; denne forskel var imidlertid ikke statistisk signifikant.
The effect was more pronounced in the younger age group (60 to 69 years) where the efficacy of ZOSTAVAX on HZ pain BOI was 66% compared to 55% in patients ≥ 70 years of age; however, this difference was not statistically significant (p=0.266).