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Psychometric properties of the Chinese version of the Posttraumatic Growth Inventory-Short Form among Chinese-speaking cancer patients
A Chinese short-form posttraumatic-growth questionnaire was evaluated in 514 cancer patients. Reliability was encouraging, but the full paper reports response-category and measurement-invariance concerns that qualify a broad claim that the instrument is ready for every setting.
What was evaluated?
Researchers translated and adapted the Posttraumatic Growth Inventory-Short Form, then compared its scores with benefit-finding and anxiety/depression measures. They assessed item structure, internal consistency and repeat testing. The study concerns how a questionnaire measures reported growth, not whether a psychosocial treatment improves health.
What reliability results were reported?
Cronbach's alpha was 0.890 and McDonald's omega 0.884. The test-retest intraclass correlation was 0.785. These statistics describe consistency of responses under the study conditions; they do not establish that a score is an objective measure of recovery or a diagnosis.
What does the full analysis add?
Although the abstract presents a one-factor result, the discussion explains that exploratory analysis suggested three factors and a modified one-factor model fit best. It also reports disordered response-category thresholds across all items, suggesting that participants may not reliably distinguish all six response levels. Measurement precision was lower at the extremes.
Can the same interpretation be assumed for everyone?
The full paper does not establish complete gender invariance and calls for independent testing of possible scoring changes. Participants came from one oncology centre and may not represent other cancer populations. The scale can support research with these limits acknowledged, but this explanation does not endorse unvalidated rescoring or clinical decisions based on a number alone.
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- Paper metadata
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- PMC13642187