计量经济分析 = Econometric analysis

How do social networks affect the spread of behavior? A popular hypothesis states that networks with many clustered ties and a high degree of separation will be less effective for behavioral diffusion than networks in which locally redundant ties are rewired to provide shortcuts across the social space. A competing hypothesis argues that when behaviors require social reinforcement, a network with more clustering may be more advantageous, even if the network as a whole has a larger diameter. I investigated the effects of network structure on diffusion by studying the spread of health behavior through artificially structured online communities. Individual adoption was much more likely when participants received social reinforcement from multiple neighbors in the social network. The behavior spread farther and faster across clustered-lattice networks than across corresponding random networks.

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The spread of behavior in an online social network experiment.

Supporting Online Material for The Spread of Behavior in an Online Social Network Experiment

This survey of sexual practices in the United States has been combed by the media for items of interest to the public: monogamous sex is much more widespread in this country than has been thought; infidelity is less frequent than presumed; vaginal intercourse is the defining experience of heterosexual behavior; watching one's partner undress is stimulating to many people; married couples have more sex than single people (unmarried, cohabiting couples have the most sex of all); the majority of couples experience sex twice a week to several times a month; 2.8% of men identify themselves as homosexual and 1.4% of women do so, but a higher percentage of people consider a same-gender experience to have some appeal; 75% of men always experience orgasm compared with 28.6% of women, but more nearly equal numbers of men and women declare themselves satisfied with their sexual experiences. The book is, in fact, a

The Social Organization of Sexuality: Sexual Practices in the United States

Social relationships—both quantity and quality—affect mental health, health behavior, physical health, and mortality risk. Sociologists have played a central role in establishing the link between social relationships and health outcomes, identifying explanations for this link, and discovering social variation (e.g., by gender and race) at the population level. Studies show that social relationships have short- and long-term effects on health, for better and for worse, and that these effects emerge in childhood and cascade throughout life to foster cumulative advantage or disadvantage in health. This article describes key research themes in the study of social relationships and health, and it highlights policy implications suggested by this research.

/pdf/social-relationships-and-health-a-flashpoint-for-health-5acz10lskr.pdf

Social Relationships and Health: A Flashpoint for Health Policy

People are interconnected, and so their health is interconnected. In recognition of this social fact, there has been growing conceptual and empirical attention over the past decade to the impact of social networks on health. This article reviews prominent findings from this literature. After drawing a distinction between social network studies and social support studies, we explore current research on dyadic and supradyadic network influences on health, highlighting findings from both egocentric and sociocentric analyses. We then discuss the policy implications of this body of work, as well as future research directions. We conclude that the existence of social networks means that people's health is interdependent and that health and health care can transcend the individual in ways that patients, doctors, policy makers, and researchers should care about.

/pdf/social-networks-and-health-t5ta4zzakv.pdf

Social Networks and Health

Perceptions of risk and strategies for prevention: responses to HIV/AIDS in rural Malawi

Upper Gastrointestinal Hemorrhage and Transcatheter Embolotherapy: Clinical and Technical Factors Impacting Success and Survival

We document social inequalities in cause-specific mortality at ages 35–64 in Finland and the United States, countries with different health systems, income distributions, and social welfare programs for the working-aged population. The education–mortality gradient was the most marked for Finnish men and for causes of death linked to risk-taking, health behaviors, and stress. The association between family income and mortality was curvilinear in both countries. The effects of education and income were strongly attenuated after controlling for each other, marital status, and labor force participation, with the greatest attenuation observed for income in Finland and education in the United States.

https://www.jstor.org/stable/info/20164334

Socioeconomic differentials in mortality in Finland and the United States: the role of education and income

BACKGROUND:Social networks may influence screening behaviors. We assessed whether screening for breast, prostate, or colorectal cancer is influenced by the actual screening behaviors of siblings, friends, spouses, and coworkers. METHODS:We conducted an observational study using Framingham Heart Study data to assess screening for eligible individuals during the late 1990s. We used logistic regression to determine whether the probability of screening for breast, prostate, or colorectal cancer was influenced by the proportion of siblings, friends, and coworkers who had the same screening, as well as spouse’s screening for colorectal cancer, adjusting for other factors that might influence screening rates.RESULTS:Among 1660 women aged 41-70 years, 71.7% reported mammography in the previous year; among 1217 men aged 51-70 years, 43.3% reported prostate-specific antigen testing in the previous year; and among 1426 men and women aged 51-80 years, 46.9% reported stool blood testing and/or sigmoidoscopy in the previous year. An increasing proportion of sisters who had mammography in the previous year was associated with mammography screening in the ego (odds ratio [OR], 1.034; 95% confidence interval [CI], 1.000-1.065 for each 10% increase). A spouse with recent screening was associated with more colorectal cancer screening (OR, 1.65; 95% CI, 1.39-1.98 vs unmarried). Otherwise, screening behaviors of siblings, friends, and coworkers were not associated with screening in the ego.CONCLUSIONS:Aside from a slight increase in breast cancer screening among women whose sisters were screened and colorectal cancer screening if spouses were screened, the screening behavior of siblings, friends, or coworkers did not influence cancer screening behaviors.Cancer2011;117:3045-52. V C 2011 American Cancer

https://acsjournals.onlinelibrary.wiley.com/doi/pdf/10.1002/cncr.25849

Kirsten P. Smith

Papers

Social Networks and Health

Perceptions of risk and strategies for prevention: responses to HIV/AIDS in rural Malawi

Upper Gastrointestinal Hemorrhage and Transcatheter Embolotherapy: Clinical and Technical Factors Impacting Success and Survival

Socioeconomic differentials in mortality in Finland and the United States: the role of education and income

Minimal social network effects evident in cancer screening behavior.