This study tracked about 1,000 adults in the United States, and they ranged in age from 34 to 93, and they started the study by asking, "How much stress have you experienced in the last year?"
Undersøgelsen fulgte 1.000 voksne i USA, i alderen 34 til 93, og de begyndte undersøgelsen med at spørge, "Hvor meget stress har du oplevet i det foregående år?"