Dyadic effects of coping strategies on emotional state and quality of life in prostate cancer patients and their spouses.

BACKGROUND: During cancer, coping strategies adopted by patients with prostate cancer and their spouses have an effect on their own emotional state and quality of life (QoL). However, the effects of coping strategies used by a member of a couple on the well-being of the other member are unknown. The aim of this study is to examine the dyadic effects of coping strategies on the emotional state and QoL of couples dealing with cancer. METHODS: Ninety-nine couples completed various self-questionnaires to assess psychological and physical QoL, anxiety, depressive symptoms, and coping strategies at the beginning, middle, and end of primary treatment. RESULTS: Results obtained with the actor-partner interdependence model showed that coping strategies used by patients or spouses play a key role not only in their own well-being but also in their partners'. Indeed, when patients use problem-focused coping or social support-seeking, they, as well as their spouses, experience fewer anxiety and depressive symptoms. Conversely, patients or spouses who use emotion-focused coping experience higher levels of anxiety and depressive symptoms. Finally, and it is a surprising result, when spouses seek social support, patients feel greater anxiety. CONCLUSIONS: These findings suggest that both patients and spouses should be included in psychosocial programs, which develop and reinforce their ability to cope with cancer. Couples may benefit from membership in support groups allowing them to share their experiences.

The Caregivers Quality of Life Cancer index scale (CQoLC): an exploratory factor analysis for validation in French cancer patients' spouses.

PURPOSE: The purpose of this study was to evaluate the reliability and validity of the Caregivers Quality of Life Cancer index scale (CQoLC) in a sample of spouses of French cancer patients. METHODS: The CQoLC, the Medical Outcomes Study Short Form 12 (MOS SF-12) and the State-Trait Anxiety Inventory (STAI) were administered to 300 spouses aged 21-85 years. Clinical data such as severity of cancer, medical treatment and duration of illness were obtained from a review of medical records. RESULTS: An exploratory factor analysis yielded a 23-item measure with one factor explaining 38.76% of the variance: labeled impairment of quality of life. The correlations between this factor and MOS SF-12 were negative for the physical component (ρ = -0.351, p < 0.001) and positive for the mental component (ρ = 0.184, p < 0.005). One-way ANOVA with STAI scores indicated good discriminant validity (F[2, 237] = 4.80, p < 0.01, η(2) = 0.04). Participants with low anxiety had a better quality of life than those with moderate and high anxiety. CONCLUSIONS: The findings indicate that the CQoLC has sufficient validity and reliability to assess the impairment of quality of life in spouses of French cancer patients.

Structural and reliability analysis of quality of relationship index in cancer patients.

Among psychosocial factors affecting emotional adjustment and quality of life, social support is one of the most important and widely studied in cancer patients, but little is known about the perception of support in specific significant relationships in patients with cancer. This study examined the psychometric properties of the Quality of Relationship Inventory (QRI) by evaluating its factor structure and its convergent and discriminant validity in a sample of cancer patients. A total of 388 patients completed the QRI. Convergent validity was evaluated by testing the correlations between the QRI subscales and measures of general social support, anxiety and depression symptoms. Discriminant validity was examined by testing group comparison. The QRI's longitudinal invariance across time was also tested. Principal axis factor analysis with promax rotation identified three factors accounting for 42.99% of variance: perceived social support, depth, and interpersonal conflict. Estimates of reliability with McDonald's ω coefficient were satisfactory for all the QRI subscales (ω ranging from 0.75 - 0.85). Satisfaction from general social support was negatively correlated with the interpersonal conflict subscale and positively with the depth subscale. The interpersonal conflict and social support scales were correlated with depression and anxiety scores. We also found a relative stability of QRI subscales (measured 3 months after the first evaluation) and differences between partner status and gender groups. The Quality of Relationship Inventory is a valid tool for assessing the quality of social support in a particular relationship with cancer patients.

The Ways of Coping Checklist (WCC): validation in French-speaking cancer patients.

We explore the psychometric properties of the French version of the Ways of Coping Checklist Revised (WCC-R) for a cancer patient sample. The WCC-R was completed by 622 patients and 464 completed the State-Trait Anxiety Inventory (STAI). A confirmatory factor analysis (CFA) on the original factor structure did not fit the data. The sample was randomly divided into two subsamples. Exploratory factor analysis was conducted on one subsample and revealed three factors: 'Seeking social support', 'Problem focused-coping' and 'Self-blame and avoidance', including 21 items. A CFA confirmed this structure in the second subgroup. These scales correlated with the anxiety scores.