Figure 2. Cognitive Impairment among Survivors of Severe Sepsis at Each Survey Time Point.

The (unadjusted) percentage of surviving patients suffering from cognitive impairment at each time point is shown, on the white background before sepsis and on the grey background after sepsis. 95% confidence intervals for the proportions are shown.

Interpretive Example: These data demonstrate that in comparison to relatively stable rates before severe sepsis, the prevalence of moderate/severe cognitive impairment among eventual survivors increased from 6.1% (95% CI: 4.2%, 8.0%) before severe sepsis to 16.7% (95% CI: 13.8%, 19.7%) at the first survey after severe sepsis (p<0.001 by χ²). (See also Table 2.)