Methodology

How Does the Gallup-Healthways Well-Being Index Work?

Measures Purpose, Social, Financial, Community, and Physical Well-Being Worldwide

What is the Gallup-Healthways Well-Being Index?

In 2008, Gallup and Healthways initiated a 25-year partnership, merging decades of clinical research, health leadership, and behavioral economics research to track and understand the key factors that drive well-being. The Gallup-Healthways Well-Being Index provides an in-depth, nearly real-time view of Americans' well-being. Having an awareness of U.S. residents' well-being provides unmatched insights into people at the community, state, and national levels.

The Well-Being Index measures Americans' perceptions of their lives and their daily experiences through five interrelated elements that make up well-being: sense of purpose, social relationships, financial security, relationship to community, and physical health.

Gallup and Healthways in 2012 created the Gallup-Healthways Global Well-Being Index to measure well-being worldwide. Gallup added 10 questions to its World Poll in 2013, with each of the questions associated with one of the five elements of well-being. Gallup compiles individual responses and categorizes the respondents as thriving, struggling, or suffering in each element. The Global Well-Being Index uses the same data collection and weighting methodology as the Gallup World Poll.

How are interviews conducted for the Gallup-Healthways Well-Being Index?

Gallup interviews U.S. adults aged 18 and older living in all 50 states and the District of Columbia using a dual-frame design, which includes both landline and cellphone numbers. Gallup samples landline and cellphone numbers using random-digit-dial methods. Gallup purchases samples for this study from Survey Sampling International (SSI). Gallup chooses landline respondents at random within each household based on which member had the most recent birthday. Each sample of national adults includes a minimum quota of 60% cellphone respondents and 40% landline respondents, with additional minimum quotas by time zone within region. Gallup conducts interviews in Spanish for respondents who are primarily Spanish-speaking.

How many people are interviewed as part of the Gallup-Healthways Well-Being Index?

Gallup interviews at least 500 U.S. adults aged 18 and older daily. More than 175,000 respondents are interviewed each year, and over 2 million interviews have been conducted to date since 2008.

How often are Gallup-Healthways Well-Being Index interviews conducted?

Since it began in 2008, the Gallup-Healthways Well-Being Index survey has been conducted every day, excluding major holidays and other events, for 350 days per year.

Are Gallup-Healthways Well-Being Index samples weighted?

Yes, Gallup weights samples to correct for unequal selection probability, nonresponse, and double coverage of landline and cellphone users in the two sampling frames. Gallup also weights its final samples to match the U.S. population according to gender, age, race, Hispanic ethnicity, education, region, population density, and phone status (cellphone only, landline only, both, and cellphone mostly). Demographic weighting targets for the U.S. and states are based on the most recent Current Population Survey figures for the aged 18 and older U.S. population, while weighting targets for metropolitan areas and congressional districts are based on Nielsen Claritas statistics. Phone status targets are based on the most recent National Health Interview Survey. Population density targets are based on the most recent U.S. Census.

Where can I find results from the Gallup-Healthways Well-Being Index and learn more about the survey?

In many cases, Gallup reports findings from the Gallup-Healthways Well-Being Index in weekly, monthly, quarterly, and yearly aggregates, and by region, state, and community, as appropriate on Gallup.com. Sign up for Gallup News alerts to get these articles as soon as they are published.

To get the full trends for U.S. well-being data collected through the Gallup-Healthways Well-Being Index since 2008, subscribe to Gallup Analytics.

Learn more about the Gallup-Healthways Well-Being Index.

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