Nicholas A. Christakis

TL;DR: It is found that antagonists of friends and friends of antagonists tend to be antagonists; but, in an important empirical refutation of balance theory, it is found That antagonists of antagonists also tend to been antagonists, not friends.

TL;DR: It was concluded that Medicare NCH claims for 5FU administration in the SEER-Medicare data set exhibit construct validity and Criterion validation studies with an external gold standard should be pursued to determine the sensitivity and specificity of chemotherapy codes in the Medicare N CH files.

TL;DR: In this article, the authors develop and analyze a tractable empirical model for strategic network formation that can be estimated with data from a single network at a single point in time, where in each period a single randomly selected pair of agents has the opportunity to form a link, and a link will be formed if both agents view the link as beneficial to them.

TL;DR: The social (and spatial) clustering of vaccine-refusing households could be leveraged to tailor communication strategies to improve vaccine acceptance and community perceptions of immunization programs for polio and other vaccine-preventable diseases.

TL;DR: It is suggested that neighborhood structural contexts - that provide opportunities for interacting with others and favoring new social engagements - could be potential modifiers of the widowhood effects and as such requires more systematic consideration in future research of Widowhood effects on well-being and mortality.