The weakness of the article is that data taken are not a random sample of the country, which puts a restrain on the generalization of the results. Also, there is a lack of discrepancy in respondent age, as over 98% of the Wisconsin Longitudinal Study (WLS) were born between 1938 and 1940. The strength of the article is the authors promoting the essential piece of optimal patient-centered care for older adults, and the inclusion of gender, cognitive ability, multiple personality traits, rural or farm origins, education, and wealth as an integral part of personal and health care decision
