Risk of stroke after HZ and HZO compared to control periods.

<p>Risk of stroke after HZ and HZO compared to control periods.</p

Incidence rate ratios (IRRs) with 95% confidence intervals for stroke after HZ as well as for stroke after HZO in time intervals < 2 weeks, week 3–4, month 2–3, month 4–6, and month 7–12.

<p>Incidence rate ratios (IRRs) with 95% confidence intervals for stroke after HZ as well as for stroke after HZO in time intervals < 2 weeks, week 3–4, month 2–3, month 4–6, and month 7–12.</p

Baseline characteristics of study cohort.

<p>Baseline characteristics of study cohort.</p

Definition of risk periods: (a) for primary analysis; (b) split by age group; (c) additional stratification by potential confounders (here: myocardial infarction).

<p>Definition of risk periods: (a) for primary analysis; (b) split by age group; (c) additional stratification by potential confounders (here: myocardial infarction).</p

Sensitivity analyses: exclusion of fatal stroke and adjustment for time-varying confounders.

<p>Sensitivity analyses: exclusion of fatal stroke and adjustment for time-varying confounders.</p

Distribution of time-varying confounders.

<p>Distribution of time-varying confounders.</p