Psychometric analysis of the Chinese version of the Posttraumatic Growth Inventory with cancer patients in Hong Kong and Taiwan

Abstract

The four-factor model of the PTGI-C is invariant among cancer survivors using traditional Chinese as a written form of the language. The differences in the degree of some posttraumatic growth dimensions may be because of differences in cultural factors and in psychosocial support for cancer patients between the two regions.

Examining the psychometric properties of the Chinese Post-Traumatic Growth Inventory for patients suffering from chronic diseases

“…This study also confirmed that all 21 items of the CPTGI can be included in assessing PTG; deletion of any item (e.g. item 15, as suggested by Ho et al, 2013) did not enhance the model fit or internal consistency reliability in this study, and hence deletion of any items is not advisable. On the subscale level, the original five subscales possessed better internal consistency reliability than the four first-order factors or the higher-order factor (intrapersonal).…”

“…Their findings provide evidence that a second-order model of PTG, in which self, life orientation and spiritual were first-order factors posited under the intrapersonal factor, the interpersonal factor was on the first order on its own. Ho et al (2013) further validated this model and confirmed the factor invariance of this model across Taiwan and Hong Kong Chinese cancer patients. The Chinese Post-Traumatic Growth Inventory (CPTGI) has yet to be validated among noncancer patients in Hong Kong, and there is limited evidence portraying the PTG among chronic disease patients in Hong Kong.…”

“…The factor structure of the CPTGI was tested by structural equation modelling (SEM) using AMOS v.20. The current sample size of 265 was larger than previous studies on the CPTGI: Ho et al (2004), n = 188; Ho et al (2013), n = 217. This sample size has fulfilled the requirement of n ⩾200 for confirmatory factor analysis (CFA) related to model building (Myers et al, 2011).…”

“…This sample size has fulfilled the requirement of n ⩾200 for confirmatory factor analysis (CFA) related to model building (Myers et al, 2011). The baseline model was the original model proposed by Tedeschi and Calhoun (1996), which was tested against other competing models suggested by Zhai et al (2014) and by Ho and colleagues (Ho et al, 2004(Ho et al, , 2013). Indication of model fit followed the commonly adopted criteria, including χ 2 /df ⩽3.0, goodness-of-fit index (GFI), adjusted GFI (AGFI), comparative fit index (CFI) and Tucker Lewis index (TLI) values of ⩾.9, root mean square error of approximation (RMSEA) and standardized root mean square residual (SRMR) <.05.…”

“…Based on previous findings regarding PTG and disease diagnosis duration, this study included patients diagnosed with any chronic illness within the last 10 years. Based on previous findings among Chinese patients suffering from cancer (Ho et al, 2004(Ho et al, , 2013, it is hypothesized that: H1: The CPTGI will fit a four-factor higher model; H2: PTG will correlate positively with hope and positive coping among Chinese chronic disease patients; H3: PTG will correlate negatively with anxiety and depression among Chinese chronic disease patients.…”