Figure 1.

Poor sleep burden and incident delirium. (A) Hazard ratios (±95% CI) for incident delirium using Cox proportional hazards regression models adjusted for age, sex, education, ethnicity, and deprivation level; percentage of the cohort by sleep disturbance burden group in the panel below. (B) Unadjusted cumulative incidence plot showing the percentage of cohort with the first diagnosis of delirium over time, in the 4 sleep burden groups (minimal = 0–1, mild = 2–3, moderate = 4–5, and severe = ≥6, based on the sleep score). CI = confidence interval.