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Behavioral Risk Factor Survey Data Technical Notes

The data in the NJ Behavioral Risk Factor query module come from the New Jersey Behavioral Risk Survey, administered by the New Jersey Department of Health.

The NJBRFS query module contains incomplete data for 2018; data for the NJBRFS project were collected from January to March and October to November only and by two different survey companies. Additionally, supplemental data were received from other state BRFSS programs which conducted interviews throughout the year among New Jersey residents as part of a reciprocity agreement. Although the data meet minimum requirements to be included in the national BRFSS public-use data set, please consider the differences in collection when comparing estimates across years.
Starting in 2011, BRFSS protocol requires that the NJBRFS incorporate a fixed quota of interviews from cell phone respondents along with a new weighting methodology called iterative proportional fitting or "raking". The new weighting methodology incorporates additional demographic information (such as education, race, and marital status) in the weighting process.

These methodological changes were implemented to account for the under-representation of certain demographic groups in the land line sample which resulted in part from the increasing number of U.S. households without land line phones.

Comparisons between 2011 and prior years should therefore be made with caution.

More details about these changes are available from the CDC:

The New Jersey Department of Education maintains a Student Health Survey of health risks and related behaviors among New Jersey high school students based on CDC's Youth Risk Behavior Survey.

The information provided above is from the Department of Health's NJSHAD web site ( The information published on this website may be reproduced without permission. Please use the following citation: " Retrieved Wed, 21 February 2024 13:41:35 from Department of Health, New Jersey State Health Assessment Data Web site: ".

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