Psychometric evaluation of the Chinese version of the revised illness perception questionnaire for breast cancer-related lymphedema

Effect of perceived injustice-targeted pain neuroscience education compared with biomedically focused education in breast cancer survivors: a study protocol for a multicentre randomised controlled trial (BCS-PI trial)

INTRODUCTION

Current treatments for pain in breast cancer survivors (BCSs) are mostly biomedically focused rather than biopsychosocially driven. However, 22% of BCSs with pain are experiencing perceived injustice, which is a known predictor for adverse pain outcomes and opioid prescription due to increased maladaptive pain behaviour. Educational interventions such as pain neuroscience education (PNE) are suggested to target perceived injustice. In addition, motivational interviewing can be an effective behavioural change technique. This trial aims to examine whether perceived injustice-targeted PNE with the integration of motivational interviewing is superior to biomedically focused pain education in reducing pain after 12 months in BCS with perceived injustice and pain. In addition, improvements in quality of life, perceived injustice and opioid use are evaluated, and a cost-effectiveness analysis will finally result in a recommendation concerning the use of perceived injustice-targeted PNE in BCSs with perceived injustice and pain.

METHODS AND ANALYSIS

This two-arm multicentre randomised controlled trial will recruit female BCS (n=156) with pain and perceived injustice. Participants will be randomly assigned to perceived injustice-targeted PNE or biomedically focused pain education in each centre. Both interventions include an online session, an information leaflet and three one-to-one sessions. The primary outcome (pain), secondary outcomes (quality of life, perceived injustice and outcomes for cost-effectiveness analysis) and explanatory outcomes (pain phenotyping, sleep, fatigue and cognitive-emotional factors) will be assessed at baseline and at 0, 6, 12 and 24 months postintervention using self-reported questionnaires online. Treatment effects over time will be evaluated using linear mixed model analyses. Additionally, a cost-utility analysis will be done from a healthcare payer and societal perspective.

ETHICS AND DISSEMINATION

The ethical agreement was obtained from the Main Ethics Committee (B.U.N.1432020000068) at the University Hospital Brussels and all other participating hospitals. Study results will be disseminated through presentations, conferences, social media, press and journals.

TRIAL REGISTRATION NUMBER

NCT04730154.

The effects of physical symptoms, self-efficacy and social constraints on fear of cancer recurrence in breast cancer survivors: Examining the mediating role of illness representations

OBJECTIVE

Fear of cancer recurrence (FCR) is common in breast cancer survivors (BCS). This study examined the mediating role of illness representations in the relationships between FCR and physical symptoms, social constraint and self-care self-efficacy.

METHODS

In this cross-sectional study, 385 women with breast cancer completed a series of questionnaires including the FCR Inventory, Social Constraints Scale-15, Cancer Survivors Self-Efficacy Scale, Illness Perception Questionnaire-Revised and European Organization for Research and Treatment Quality of Life Questionnaire-Breast Cancer. Structural equation modelling method was conduct by using a bootstrapping method.

RESULTS

Physical symptoms (β = 0.272, p < 0.01), social constraints (β = 0.130, p < 0.01), self-efficacy (β = -0.233, p < 0.01) and illness representation (β = 0.261, p < 0.01) have direct effects on FCR. The indirect effects of physical symptoms (β = 0.10, p < 0.01), social constraints (β = 0.076, p < 0.01) and self-efficacy (β = -0.025, p < 0.05) on FCR were partially mediated by illness representations.

CONCLUSIONS

In this study, the effects of physical symptoms, social constraints and self-efficacy on FCR were found to be mediated by illness representation. Reducing the impact of negative illness representations on FCR by reducing physical symptoms, increasing self-efficacy, and promoting open disclosure of cancer-related concerns may be effective in reducing FCR in BCS.

Preliminary Validation of the Revised Illness Perception Questionnaire for Patients with Nasopharyngeal Carcinoma in China

Nasopharyngeal carcinoma is a common and highly malignant cancer in southern China. It is important to accurately assess the illness perception of nasopharyngeal carcinoma according to the common-sense model of self-regulation. The purpose was to validate the Chinese version of the Revised Illness Perception Questionnaire for patients with Nasopharyngeal carcinoma. A cross-sectional survey of 631 patients with Nasopharyngeal carcinoma was conducted in Guangzhou, China. The reliability of the scale was evaluated using Cronbach's alpha. The factor structure was assessed using exploratory factor analysis (EFA) of each dimension. The EFA revealed that the 29-item self-rated scale has a seven-factor structure consistent with the original scale and explained 67.3% of the variance after extraction and rotation. The scale showed satisfactory reliability. The item-total correlations ranged from -0.16 to 0.64 (p < 0.05). The item-subscale correlations ranged from 0.46 to 0.91 (p < 0.05). The item-other subscale correlations ranged from -0.38 to 0.51 and from -0.21 to 0.56 (p < 0.05). Significant correlations were found between the timeline (acute/chronic) (r = 0.224, r = 0.166), consequences (r = 0.415, r = 0.338), timeline cyclical (r = 0.366, r = 0.284), emotional representations (r = 0.497, r = 0.465), personal control (r = -0.122, r = -0.134), treatment control (r = -0.135, r = -0.148), and illness coherence (r = -0.261, r = -0.213) subscales, and depression, anxiety (p < 0.05). The scale revealed acceptable reliability, factorial validity, and construct validity. It could be used to assess the illness representations of Chinese patients with nasopharyngeal carcinoma.

Longitudinal trajectories of illness perception regarding breast cancer-related lymphedema among women with breast cancer

OBJECTIVE

To identify longitudinal trajectories of illness perception (IP) regarding breast cancer-related lymphedema (BCRL) in the first six months after surgery among women with breast cancer and to explore the predictive effects of demographics and clinical factors on IP trajectories.

METHODS

From August 2019 to August 2021, a total of 352 patients participated in this study, 328 of whom were included in the data analysis. Demographic and clinical characteristics were collected at baseline (1-3 days after surgery). The BCRL-specific revised illness perception questionnaire was used to measure IP regarding BCRL at baseline and 1 month, 3 months and 6 months post-surgery. A multilevel model was conducted to analyze the data.

RESULTS

Over the first six months post-surgery, the "timeline acute/chronic" and "illness coherence" dimensions showed positive growth trajectories; the "personal control" and "treatment control" dimensions presented negative growth trajectories; and the trajectories of identity, consequences, cyclicality and emotional influence perceptions regarding BCRL showed no significant changes. Age, education level, marital status, employment status, family monthly income per person, cancer stage and status of removed lymph nodes were indicated to be predictive factors of IP trajectories.

CONCLUSIONS

The present study determined significant changes over the first six months post-surgery in four IP dimensions and predictive effects of some demographics and clinical details on IP trajectories. These findings may help healthcare providers know more about the dynamic characteristics of IPs regarding BCRL in patients with breast cancer and assist them in identifying patients with a tendency toward improper IP regarding BCRL.

The Predictive Role of Illness Perception on Lymphedema Risk-Management Behaviors in Women After Breast Cancer Surgery: A Longitudinal Study

BACKGROUND

Illness perception affects lymphedema risk-management behaviors. However, little is known about these behavioral changes within 6 months after surgery and how illness perception predicts behavioral trajectories.

OBJECTIVE

The aim of this study was to explore the trajectories of lymphedema risk-management behaviors in breast cancer survivors within 6 months after surgery and the predictive role of illness perception.

METHODS

Participants were recruited from a cancer hospital in China and completed a baseline survey (Revised Illness Perception Questionnaire) and follow-up assessments (Lymphedema Risk-Management Behavior Questionnaire and the physical exercise compliance dimension of the Functional Exercise Adherence Scale) at the first, third, and sixth months postoperatively.

RESULTS

A total of 251 women were analyzed. Regarding the Lymphedema Risk-Management Behavior Questionnaire, the total scores were stable. The scores of the "lifestyle" and "skin care" dimensions showed upward trends; the scores of the "avoiding compression and injury" and "other matters needing attention" dimensions showed downward trends. For "physical exercise compliance," scores remained stable. Furthermore, key illness perceptions (especially "personal control" and "causes") at baseline could predict the starting levels of and changes in behavioral trajectories.

CONCLUSION

Different lymphedema risk-management behaviors exhibited different trajectories and could be predicted by illness perception.

IMPLICATIONS FOR PRACTICE

Oncology nurses should focus on the early development of behaviors related to "lifestyle" and "skin care" and the later maintenance of "avoiding compression and injury" and "other matters needing attention" during follow-up, as well as help women strengthen their personal control beliefs and correctly understand the causes of lymphedema during hospitalization.

A cross-cultural comparison of a measure of parent perceptions among families of children with autism in Vietnam

LAY ABSTRACT

Raising an autistic child can affect many aspects of families' lives. Parents are responsible for many decisions, from initiating evaluation to selecting and implementing treatments. How parents conceptualize the course and nature of their child's diagnosis influences these processes and parents' own well-being. Parents' perceptions about their children's autism are also affected by cultural contexts and understanding of autism. The Illness Perception Questionnaire-Revised (IPQ-R) is widely used to study cognitions in chronic health research and has been adapted and validated to measure parents' perceptions and beliefs about their children's ASD (IPQ-R-ASD). However, such studies are mostly conducted in high-income countries (HICs) with western, individualistic cultural values (e.g. United States, Canada). Therefore, it is unclear whether the IPQ-R-ASD is a useful instrument in understanding parents' perceptions of autism in Vietnam, a lower- and middle-income country (LMIC) with collectivistic Asian cultural values. These differences suggest that parents in Vietnam may have cognitive representations of their children's autism that differ from those of parents living in HIC, western countries. The purpose of this study was to examine the usability of the translated Vietnamese IPQ-R-ASD that may, ultimately, help explore Vietnamese parents' autism perceptions. While the study's result indicated the usability of the translated measure in Vietnam, when interpreted with Vietnamese norms, results also highlighted notable differences between Vietnamese and North American parents' perceptions of autism that warrant further research.

Patient Toward Physician Occupational Stigma Scale: Development of the Chinese Version

Background/Objective

Physicians’ occupational stigma could eradicate physician-patient trust, threatening physicians’ social status and occupational reputation. Hitherto, there has been no scale obtaining good psychometric properties to assess patients’ stigma toward physicians. The present study aimed to develop the Patient toward Physician Occupational Stigma Scale (PPOSS) and examine its reliability and validity.

Methods

The questionnaire comprising sociodemographic information and the PPOSS were employed to survey 645 Chinese patients in two phases. In Sample 2, the Wake Forest Physician Trust Scale (WFOTS), the Intolerance of Uncertainty Scale-12 (IUS-12), and the Brief Illness Perception Questionnaire (BIPQ) were tested.

Results

The PPOSS includes 19 items subsumed into three dimensions of stereotype, discrimination, and prejudice. According to the results of confirmatory factor analysis (CFA), the three-factor model fitted well (χ²/df=2.065, RMSEA=0.057, SRMR=0.045, RFI=0.904, CFI=0.956, IFI=0.956, PNFI=0.779, PCFI=0.811). The PPOSS was significantly negatively correlated with the WFOTS, and significantly positively correlated with the IUS-12 and the BIPQ. The Cronbach’s alpha coefficients for the total scale and each dimension were between 0.87 and 0.94, and the split-half reliability coefficients were between 0.84 and 0.93. Besides, the PPOSS had the measurement invariance across gender.

Conclusion

With its satisfactory psychometric properties, the PPOSS can be used as an effective instrument to assess patients’ stigma toward physicians.

Self-reported questionnaires for lymphoedema: a systematic review of measurement properties using COSMIN framework

INTRODUCTION

Lymphoedema may develop as a result of numerous genetic and traumatic causes; however, treatment for cancer is the most common cause of its development in more economically developed nations. This systematic review critically appraised, compared and summarised the measurement properties of lymphoedema-specific self-reported questionnaires (SRQs) measuring various patient-reported outcomes including quality of life (QOL), function, morbidity, and symptoms.

METHODS

Seven databases were searched to identify studies of the measurement properties of SRQs. Two review teams independently evaluated the quality of the individual studies using the risk of bias tool from the Consensus-based Standards for the Selection of Health Measurement Instruments (COSMIN). Measurement properties of the SRQs presented in the studies were then rated. Study level ratings were summarised for an SRQ if they were reported in multiple studies, and their overall quality of the evidence were then graded.

RESULTS

Forty articles, reporting on 19 SRQs were identified from 8615 records. The focus of the 19 SRQs included eight on QOL, four on symptoms, two on function, and two on impairment. The other three SRQs were on illness perception, self-efficacy, and patient-relevant treatment benefit, respectively. Eight and three SRQs were upper limb and lower limb-specific, respectively, whereas seven questionnaires were for both upper and lower limb lymphoedema. One SRQ was developed for head and neck lymphoedema. According to the COSMIN framework, none of the SRQs reviewed had sufficient evidence to support all nine measurement properties. In lower limb questionnaires, the LYMQOL-leg has sufficient content, structural, and construct validity as well as internal consistency and reliability. For upper limb lymphoedema questionnaires, the Lymph-ICF-UL had sufficient content and construct validity as well as reliability.

CONCLUSION

LYMQOL-leg SRQ is recommended with confidence for evaluation of QOL of people with lower limb lymphoedema while the Lymph-ICF-UL is recommended for evaluation of the QOL of the breast cancer-related lymphoedema with some confidence. In view of the high level of the indeterminate ratings of the measurement properties of the existing SRQs, further research is desirable.