Mean age of the study sample was 44.5 years, 21.1% were men, 10.9% were nonwhite, and more than half had at least 2 comorbid conditions.是什么意思_Mean age of the study sample was 44.5 years, 21.1% were men, 10.9% were nonwhite, and more than half had at least 2 comorbid conditions.在线翻译_英语_读音_用法_例句