Page 10 - Microsoft Word - 2008 TBI Surveillance Report Title & Conten

5
Methodology
I.
Data Analysis
The data sources selected to analyze were TBI hospital discharge data from both
inpatient and emergency department visits, and vital record death certificate data.
Staff of the New Hampshire Department of Public Health, Health Statistics and Data
Management Section performed the analysis.
A.
Death Data Source
:
Bureau of Data and Systems Management (BDSM),
Office of Medicaid Business and Policy (OMBP), New Hampshire Department of
Health and Human Services (NH DHHS), and the New Hampshire Department of
State, Division of Vital Records Administration, [2001-2005]. Underlying cause
of death is classified in accordance with the International Classification of
Disease. Deaths for 1999 and beyond are classified using the Tenth Revision
(
ICD-10).
B.
Hospital Discharge Data Source
:
Bureau of Data and Systems Management
(
BDSM), Office of Medicaid Business and Policy (OMBP), New Hampshire
Department of Health and Human Services (NH DHHS), with assistance from a
DHHS contractor, [2000-2005].
II.
Case Inclusion Criteria
The above datasets were filtered to include only residents of New Hampshire with the
presence of codes indicating TBI. In the hospital data, TBI codes were searched in
the principle diagnosis field and the nine secondary diagnosis fields. The death data
was searched in the certified underlying cause of death field and the fifteen
Rec_Axis” code fields. The following is a list of the ICD-9 and ICD-10 codes
included in this study:
A.
ICD-9, Hospital Discharges
Fracture of Vault or Base of Skull:
Between “800” and “80199”
Other Skull Fractures:
Between “803” and “80499”
Intra-cranial Injury, Concussion:
Between “850” and “85419”
Injury to Spinal Cord:
Between “9501” and “95039”
Head Injury, unspecified:
Like “95901*”
Shaken Infant Syndrome:
Like “99555*”