McGill University, Kinesiology and Physical Education, Montreal, Quebec, Canada.
Psychooncology. 2010 Aug;19(8):830-8. doi: 10.1002/pon.1640.
The present study tested the proposed five-factor structure and invariance of the Posttraumatic Growth Inventory (PTGI; Tedeschi & Calhoun, 1996) in a sample of physically active breast cancer survivors.
A sample of breast cancer survivors (N=470, Mage=57.3, SD=7.8 years) completed the PTGI and a demographic questionnaire. The factor structure, factorial invariance, and latent mean invariance were tested using maximum likelihood structural equation modeling.
Preliminary analyses showed acceptable reliability for the PTGI subscales (alpha<0.83). Confirmatory factor analysis (CFA) supported the five related factors corresponding to: relating to others, new possibilities, personal strength, spiritual change, and appreciation of life (chi(2) (179)=822.53, CFI=0.97, NNFI=0.96, SRMR=0.05, RMSEA=0.09). Multigroup CFA supported the invariance of the PTGI across age groups, treatment type, time since diagnosis, and time since last treatment.
These findings provide support for (1) the multidimensional nature and factorial validity of the PTGI, and (2) the use of the PTGI in future research examining posttraumatic growth within samples of physically active breast cancer survivors.
本研究在一组参加体育活动的乳腺癌幸存者样本中，检验了创伤后成长量表（PTGI；Tedeschi 和 Calhoun，1996）的五因素结构和不变性假设。
一组乳腺癌幸存者（N=470，Mage=57.3，SD=7.8 岁）完成了 PTGI 和一份人口统计问卷。使用最大似然结构方程建模检验了因子结构、因子不变性和潜在均值不变性。
初步分析显示，PTGI 分量的可靠性可接受（alpha<0.83）。验证性因子分析（CFA）支持与以下五个相关因素相对应的五因素结构：与他人的关系、新的可能性、个人力量、精神变化和对生活的欣赏（chi(2) (179)=822.53，CFI=0.97，NNFI=0.96，SRMR=0.05，RMSEA=0.09）。多群组 CFA 支持 PTGI 在年龄组、治疗类型、诊断后时间和上次治疗后时间上的不变性。
这些发现为（1）PTGI 的多维性质和因子有效性，以及（2）在未来研究中在参加体育活动的乳腺癌幸存者样本中使用 PTGI 来检验创伤后成长提供了支持。
