Cohen C I, Teresi J, Holmes D
Int J Aging Hum Dev. 1986;24(4):257-69. doi: 10.2190/98ka-rcql-8e8e-htp8.
The authors address some of the methodological problems found in earlier investigations of the relationship between social networks and mortality. Of particular concern was the use of rudimentary measures of social interaction in previous work. Utilizing nineteen social network variables, the authors examined 155 elderly residents of midtown Manhattan single-room occupancy hotels. On three-year follow-up, twenty-eight persons had died. Discriminant function analysis indicated that ten of nineteen network variables were relatively strong discriminators between survivors and non-survivors (i.e., standardized coefficient of .20 or greater). The network variables cut across all categories of social interaction, thereby revealing why, despite the few network variables used in previous studies, nearly all had been significant.
作者探讨了早期关于社交网络与死亡率关系的调查中发现的一些方法学问题。特别令人担忧的是先前研究中使用的基本社交互动测量方法。作者利用19个社交网络变量，对曼哈顿中城单人居住酒店的155名老年居民进行了调查。在三年的随访中，有28人死亡。判别函数分析表明，19个网络变量中的10个在幸存者和非幸存者之间是相对较强的判别指标（即标准化系数为0.20或更高）。这些网络变量涵盖了所有社交互动类别，从而揭示了为什么尽管先前研究中使用的网络变量很少，但几乎所有变量都具有显著性。
