At A Glance
Noteworthy Characteristics
- Accelerometer data, pedometer step counts, and additional questionnaire data were collected from volunteer subsamples of the cohort
- The Jackson Heart Study is the largest single-site, community-based epidemiologic investigation of environmental and genetic factors associated with cardiovascular disease among African Americans ever undertaken.
Website
https://www.jacksonheartstudy.org
Purpose
To investigate the causes of cardiovascular disease (CVD) in African Americans to learn how to best prevent this group of diseases in the future.
Target Population
African American men and women residents of the Jackson Mississippi Metropolitan Statistical Area aged 35-84 (N=76,426, US Census 2000).
Conducted
The Jackson Heart Study (JHS) was initiated in 1998 and is ongoing.
Sponsor
The Jackson Heart Study is funded by the National Heart, Lung, and Blood Institute (NHLBI) and the National Institute on Minority Health and Health Disparities (NIMHD) of the National Institutes of Health under award numbers HSN268201800010I, HHSN268201800011I and HHSN268201800012I,HHSN268201800013I, HHSN268201800014I, HHSN268201800015I
Sampling
Sample Design
Participants were enrolled from 4 recruitment pools: random, 17%; volunteer, 30%; currently enrolled in the ARIC Study, 31% and secondary family members, 22%. Recruitment was limited to non-institutionalized adult African American men and women, 35-84 years old, except in a nested family cohort where those 21 to 34 years of age were also eligible. JHS participants received three back-to-back clinical examinations (Exam 1, 2000-2004; Exam 2, 2005-2008; and Exam 3, 2009-2013). In addition, JHS participants are contacted annually by telephone to update personal and health information including vital status, interim medical events, hospitalizations, functional status and sociocultural information.
Source of Information
https://www.jacksonheartstudy.org/About/About-The-JHS
Sample Size
The JHS recruited 5306 African American residents living in the Jackson, Mississippi, metropolitan area of Hinds, Madison, and Rankin Counties. The final cohort of participants enrolled during the baseline exam included 6.6% of all African American men and women residents of the Jackson Mississippi Metropolitan Statistical Area aged 35-84 (N=76,426, US Census 2000). Among these participants, approximately 3400 gave consent that allows genetic research.
Key Variables
Demographic
| Name | Methods of Assessment |
|---|---|
| Assets: own/lease one/more cars | Questionnaire |
| Education level: adult and spouse | Questionnaire |
| Emloyment status: adult and spouse | Questionnaire |
| Home ownership vs. Renting | Questionnaire |
| Household size: number of total people and number of people under 18 living in the home in the past 12 months | Questionnaire |
| Income source: social security, investments, gambling | Questionnaire |
| Income for adult and total combined family income | Questionnaire |
| Public assistance program enrollment: general, ADC, AFDC | Questionnaire |
| Weight of adult | Questionnaire |
Diet-Related
| Name | Methods of Assessment |
|---|---|
| History of Dieting | Questionnaire |
| Frequency of food consumption: breads, vegetables, rice, beans and starchy vegatbles, beef and pork, poultry and game, other meats, lunch meat, sausage, bacon and eggs, fish, mixed meat, pizza, and pasta dishes, soups, condiments, dairy products, desserts, sweets and snacks, fruit juices, other beverages | Questionnaire |
| Intake of alcoholic beverages | Questionnaire |
| Intake of caffeine | Questionnaire |
| Serving size | Questionnaire |
| Use of dietary supplements: type, duration of use | Questionnaire |
| Water consumption | Questionnaire |
| Lab test data: glucose, cholesterol, triglycerides, HDL, LDL, NON HDL | Measured |
| Amount of food/nutrient consumed: dark green vegetables, fish, eggs | Questionnaire |
Physical Activity-Related
| Name | Methods of Assessment |
|---|---|
| Frequency and duration of physical activity from household chores | Interview |
| Frequency of leisure-time physical activity | Interview |
| Length of physical activity | Interview |
| Frequency of participation in extracurricular physical activities | Interview |
| Time spent on specific recreational/leisure sports and exercise | Interview |
| Step counts | Pedometer |
| Frequency of screen time: TV | Interview |
| Intensity of physical activity minutes, bouts, counts | Accelerometry |
| Length of physical activity | Accelerometry |
Sleep-Related
| Name | Methods of Assessment |
|---|---|
| Daytime fatigue/sleepiness and/or alertness | Questionnaire |
| Sleep continuity: Total time asleep while in bed (sleep efficiency) | Actigraphy |
| Sleep disordered breathing: Observed breathing pauses while sleeping | Questionnaire |
| Sleep disordered breathing: Snoring | Questionnaire |
| Sleep disordered breathing: awakened by trouble breathing | Questionnaire |
| Sleep disorders: Insomnia | Questionnaire |
| Sleep disorders: Sleep apnea | Questionnaire |
| Sleep disturbances and quality: Subjective satisfaction | Questionnaire |
| Sleep disturbances and quality: Trouble falling back asleep at night | Questionnaire |
| Sleep disturbances and quality: Waking up too early | Questionnaire |
| Trouble falling asleep | Questionnaire |
| Sleep duration and quantity: Total sleep time during workdays/schooldays | Questionnaire |
| Sleep duration and quantity: Hours of actual sleep a night | Questionnaire |
| Sleep duration and quantity: Total sleep time | Actigraphy |
| Social determinants of health: discrimination | Questionnaire |
| Social determinants of health: Perceived safety of neighborhood and house at night | Questionnaire |
| Sleep continuity: Sleep latency | Questionnaire |
Weight-Related
| Name | Methods of Assessment |
|---|---|
| Height of adult | Questionnaire |
| Waist circumference | Measured |
| Hip circumference | Measured |
| Weight at birth | Questionnaire |
| Percent body fat | Measured |
| Visceral fat | CT Scan |
| Weight | Measured |
Special Note(s)
The JHS physical activity (PAC) survey assessed four different domains of physical activity: active living, work, home and garden, and sport and exercise indexes
Data Access and Cost
Data Availability
The full suite of datasets can be requested through the JHS website.
Cost
All public-use data are available free of charge upon request.
Geocode/Linkage
Geocode Variable(s)
State and selected city.
Existing Linkages
The JHS represents an expansion of the Jackson Field Center of the Atherosclerosis Risk in Communities (ARIC) study (http://www2.cscc.unc.edu/aric/) to broaden data collection in an African American population and to increase access to and participation of African American populations and scientists in biomedical research and professions.
