Yeung Nelson C Y, Lu Qian
Author affiliations: The Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong (Dr Yeung); Department of Psychology, University of Houston, Texas (Dr Lu).
Cancer Nurs. 2018 Jan/Feb;41(1):53-61. doi: 10.1097/NCC.0000000000000422.
Studies have shown that social support is positively associated with posttraumatic growth (PTG) among white cancer survivors. Whether the same relationship holds among Asian American cancer survivors and through what mechanism social support may influence PTG is unclear.
This study examined the association between social support and PTG among Chinese American breast cancer survivors and proposed perceived stress as a mediator.
Chinese American breast cancer survivors (n = 118) were recruited from Southern California. Participants' social support, perceived stress, and PTG were measured in a questionnaire package.
Social support was associated with lower perceived stress (r= -0.34, P<.001) and higher PTG (r=0.44, P<.001). Perceived stress was negatively associated with PTG (r=-0.36, P< .001). Results from structural equation modeling supported the mediation model, with satisfactory model fit indices (χ37= 65.55, comparative fit index= 0.98, Tucker-Lewis Index = 0.97, root-mean-square error of approximation = 0.08). Both the indirect effect from social support to PTG via perceived stress (β = .07, P< .05) and the direct effect from social support and PTG (β= .40, P< .001) were statistically significant, suggesting a partial mediation effect of perceived stress between social support and PTG.
The positive association between social support and Chinese American breast cancer survivors' PTG was supported. Our findings also suggested that social support may facilitate PTG through reduction of perceived stress.
Interventions that help to enhance Chinese American breast cancer survivors' social support may also facilitate their PTG.
研究表明，社会支持与白人癌症幸存者的创伤后成长（PTG）呈正相关。尚不清楚这种关系在亚裔美国癌症幸存者中是否成立，以及社会支持可能通过何种机制影响PTG。
本研究探讨了华裔美国乳腺癌幸存者的社会支持与PTG之间的关联，并提出感知压力作为中介变量。
从南加州招募了华裔美国乳腺癌幸存者（n = 118）。通过一套问卷测量参与者的社会支持、感知压力和PTG。
社会支持与较低的感知压力（r = -0.34，P <.001）和较高的PTG（r = 0.44，P <.001）相关。感知压力与PTG呈负相关（r = -0.36，P <.001）。结构方程模型的结果支持了中介模型，模型拟合指数令人满意（χ37 = 65.55，比较拟合指数 = 0.98，塔克 - 刘易斯指数 = 0.97，近似误差均方根 = 0.08）。社会支持通过感知压力对PTG的间接效应（β =.07，P <.05）和社会支持与PTG的直接效应（β =.40，P <.001）均具有统计学意义，表明感知压力在社会支持与PTG之间存在部分中介效应。
社会支持与华裔美国乳腺癌幸存者的PTG之间的正相关得到了支持。我们的研究结果还表明，社会支持可能通过减轻感知压力来促进PTG。
有助于增强华裔美国乳腺癌幸存者社会支持的干预措施也可能促进他们的PTG。
