Methods: Seven large prospective cohort studies pooled data from African American participants.

Methods: Participants included 359 mothers and children from the CHAMACOS birth cohort.

Level of evidence: Level IV, Evidence from well-designed case-control or cohort studies.

Subsequent application of a specific sTBI case definition defined the final cohort.

However, long-term and larger cohort studies are needed to validate these results.

Level of evidence: Level III, systematic review of prospective nonrandomized cohort studies.

In a separate cohort of animals mortality was recorded for 5 days.

Design: Retrospective cohort analysis using data from NDCHealth's Hospital Patient Level Database.

Results were tested for replication in a second cohort including 32 patients.

Methods: The Gutenberg Health Study is a population-based, prospective, single-center cohort study.

Results: Four hundred and ninety-six cohort members died within the observation period.

Methods: This representative birth cohort study was conducted in the United Kingdom.

Therefore, we investigated its prognostic ability based on a German patient cohort.

A retrospective cohort study design was used to identify mortality risk factors.

It can thus provide valuable information, when no cohort study is available.

However, two small prospective cohort studies have not clearly supported an association.