Figure 1. Patient Cohorts.

Note that this is a hospitalization-level analysis. As such, in the severe sepsis cohort, a single respondent might contribute a hospitalization to the Survivor cohort in one hospitalization, but be Lost to Follow-up after a future hospitalization. Thus the categorization of hospitalizations as included vs. excluded are mutually exclusive, but the categorizations of respondents (*) are not. The comparison hospitalizations were all first hospitalizations.