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SH-2 Data Details

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SH-2 Reduce the rate of vehicular crashes per 100 million miles traveled that are due to drowsy driving

About the Data

Description of the data source, numerator, denominator, survey questions, and other relevant details about the national estimate.

Data Source: 
National Automotive Sampling System (NASS) General Estimates System (GES)
Changed Since the Healthy People 2020 Launch: 
No
Measure: 
per 100,000,000 vehicle miles traveled
Baseline (Year): 
2.7 (2008)
Target: 
2.1
Target-Setting Method: 
Minimal statistical significance
Target-Setting Method Justification: 
The target is the smallest improvement that results in a statistically significant difference when tested against the baseline value, assuming a relatively large standard of error of the same size as that of the baseline rate.
Numerator: 

Number of motor vehicle crashes involving drivers who are drowsy, sleepy, asleep, or fatigued

Denominator: 

Total vehicle miles traveled

Comparable Healthy People 2010 Objective: 
Adapted from HP2010 objective
Data Collection Frequency: 
Annual
Methodology Notes: 

    NASS GES data are from a nationally representative sample of police-reported motor vehicle crashes. To be included, the crash must involve a motor vehicle traveling on a traffic way and result in property damage, injury, or death.

Changes Between HP2010 and HP2020: 
This objective differs from Healthy People 2010 objective 24-12 in that the data source was modified from the Fatality Analysis Reporting System to the General Estimates System to include all crashes involving drowsy driving, not just those where there was a driver fatality. The unit of measure was also modified from the percentage of fatal crashes to the rate per vehicle miles traveled.