Incidence and hazard ratios for herpes zoster during the follow-up period for adult patients with traumatic brain injury versus control cohorts.

HZ, herpes zoster; CI, confidence interval; HR, hazard ratio; TBI, traumatic brain injury. aAdjusted HRs with 95% CI and their P values. The results were adjusted for age and Charlson comorbidity index using a Cox proportional-hazards regression model. bAdjusted HRs with 95% CI and their P values. The results were adjusted for age, sex and Charlson comorbidity index using a Cox proportional-hazards regression model. P for interaction: a Cox proportional-hazards regression model including a gender x TBI interaction was applied Incidence and hazard ratios for herpes zoster during the follow-up period for adult patients with traumatic brain injury versus control cohorts.