Table 1

Description of data sources that have been integrated into (¹) or linked with (²) the New Jersey Safety and Health Outcomes (NJ-SHO) warehouse

Data source	Contains	Years	# of records in final warehouse	Data obtained from
(1) NJ Driver Licensing¹	Detailed data on every driver licensed in the state of NJ at some point during study period	2004–2018	≈11 million drivers	NJ Motor Vehicle Commission
(2) NJ Administration of the Courts (AOC) events (eg, citations, suspensions, restorations)¹	Date and type of all licence-related events in NJ; was directly populated by AOC into the NJ Driver Licensing Database	2004–2018	≈86 million events	NJ Motor Vehicle Commission
(3) NJ Crash Report¹*	Crash-level, vehicle-level, driver-level, passenger-level and pedestrian/pedalcyclist-level data for all police-reported crashes in NJ	2004–2017	≈8 million drivers, ≈2.7 million passengers, ≈120 000 pedestrians/ pedalcyclists	NJ Motor Vehicle Commission
(4) NJ Birth Certificate¹†	Birth certificate data for all births occurring in NJ	Birth years 1979–2000	≈2.5 million births	NJ Department of Health
(5) NJ Death Certificate¹‡	Death certificate data for all NJ deaths	2004–2016	≈940 000 deaths	NJ Department of Health
(6) NJ Hospital Discharge Data Collection System¹	Detailed utilisation data on all NJ inpatient, outpatient and emergency department discharges; files are derived from hospital uniform billing information	2004–2017	≈63 million visits	NJ Department of Health
(7) CHOP electronic health record (EHR)¹	EHR data on all CHOP healthcare network patients who were NJ residents at last CHOP visit	2005–2018§	≈200 000 patients	CHOP
(8) Geographical-level sources (eg, US Census, American Community Survey)¹	Age-specific, sex-specific and race/ethnicity-specific population data; census tract-level indicators are assigned to individuals based on geocoded residential addresses	2004–2018		US Census Bureau website
(9) National Highway Traffic Safety Administration (NHTSA) Catalog and Vehicle platform¹	Decodes VIN of a specified vehicle and provides detailed vehicle information (eg, model year, vehicle type, presence of safety features)	Crash years 2004–2017	Varies by year; 2017 data: 95% of vehicles	NHTSA
(10) Medicaid²	Insurance enrolment; demographics; medical conditions; medication use; all inpatient and outpatient encounters with a healthcare provider	2007–2012	>500 000 beneficiaries/year	Centers for Medicare and Medicaid Services
(11) Medicare Fee-for-Service Claims²	Insurance enrolment; demographics; medical conditions; medication use; all inpatient and outpatient encounters with a healthcare provider	2007–2017	≈1.5 million NJ beneficiaries/year	Centers for Medicare and Medicaid Services

*A crash is reportable to police if it results in injury to or death of any person, or damage to property of any one person in excess of $500.
†Subsequent linkages will include a much wider range of birth years (through the most recent year available).
‡Note that this is expected to be a more complete reporting of crash-related fatalities than NHTSA’s Fatality Analysis Reporting System, which is restricted to fatalities occurring ≤30 days of crash.
§Currently, EHR data for patients born from 1987 to 2000 (ie, driving-eligible ages) are integrated into the NJ-SHO.
CHOP, Children’s Hospital of Philadelphia; VIN, vehicle identification number.