Reference

Year(s) of Data

Location

Case Definition and Data Source

TBI Severity Criteria and Scoring

Johansson et al., 1991

1984 to 1985

Northern Sweden

Hospital admissions with ICD 850–854

Severity not evaluated

Annoni et al., 1992

1987

Canton St. Gallen, Switzerland

Hospitalized patients with intracranial lesions on admission CT

Severe brain injury only GCS < 7, 7–9, 10–12, > 12

Vazquez-Barquero et al., 1992

1988

Cantabria, Spain

Hospital admissions with objective neurological findings such as LOC, skull fracture

GCS, minor = 13–15, moderate 9–12, severe 3–8

Engberg, 1995

1988

Frederiksborg County, Denmark

ED and hospital ICUs in 4 hospitals using hospital records, Danish Hospital Register and National Register

Severity by PTA: 24 hrs-7 days = severe, very severe ≥ 7 days

Chiu et al., 1997

1988 to 1994

Taiwan

Hospital admission with LOC, skull fracture, neurological deficit or CT intracranial hemorrhage

GCS: mild = 13–5, moderate = 9–12 (or CT pos), severe ≤ 8

Hillier et al., 1997

1987

South Australia

All public and private hospitals with admission ICD-9 codes of 348, 800, 803, 804, 850-854

GCS: mild = 13–5, moderate = 9–12 (or CT pos), severe = 3–8; PTA < 30 min = mild, 30–60 min = moderate, > 60 min = severe, PTA < 60 min = mild, 60 min = moderate, 24 hrs = severe

Ingebrigtsen et al., 1998

1993

Northern Norway

All patient referral medical records includes ED visits excludes scalp, facial injuries

GCS: minimal = 15 no LOC, mild = 14 or 15 plus PTA or brief LOC or impaired alertness, moderate = 9–13 or LOC > 5 min or focal neurological deficit, severe = 5–8, critical = 3–4

Tate et al., 1998

1988

New South Wales, Australia

Admission to region hospital with ICD-9 codes 310, 800, 801, 803, 804, 850–854, 905.0, 907

Severe = PTA > 24 hrs, or GCS of < 9, moderate = PTA 1–24 hrs or GCS 9–12, mild = PTA or LOC < 1 hr

Alaranta et al., 2000

1991 to 1995

Finland

Hospital discharge or register using ICD-9 codes: 800, 801, 803, 850–854 (first-time patients only)

Severity not evaluated

Pickett et al., 2001

1988

Greater Kingston Area of Canada

Computerized ED injury records from the CHIRPP system

Severity not reported

Engberg and Teasdale, 2001

1979 to 1996

Denmark

Danish National Hospital Register using 8th ICD codes 800, 801, 803, 850–854, mortality data from National Death Register using ICD 8th and 10th codes

Severity not evaluated



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