The survey was conducted by telephone with a national sample of adults (18 years of age or older) living in all 50 U.S. states and the District of Columbia. The results reported here are based on ...

Anyone who has taken a survey has likely been given the option to “check all that apply” when answering a question. The instruction is widely used in data collection because of its ease and efficiency ...

Efforts to address these data challenges are underway, as governments and national statistical offices, working with international partners, are increasingly expanding their national surveys to ...