The DASS is a reliable questionnaire, free to use and brief to administer; therefore, it is an alternative to the previously used instruments for the screening of depression. Furthermore, the subscale stress measures irritability and tension, which are important aspects of pain experience but underused in assessment procedures for the diagnosis and treatment evaluation of patients with pain.
Despite its importance for chronic pain diseases, pain-related disability is a poorly defined concept with theoretical deficits. The distinction between impairment, disability, and handicap proposed by the WHO is an important contribution to clarification of the disability construct. With reference to four criteria (underlying disability construct, degree of behaviour generalization, assessment mode, scope) different assessment procedures of pain-related disability are presented and the advantages and disadvantages of each are discussed. A multidimensional approach to pain-related disability is advocated. Diagnostic information yielded by different assessment procedures should be viewed as complementary rather than as exclusive data sources. A German version of a self-report instrument (Pain Disability Index) that assesses disability in chronic pain patients is presented. The results from four data sets concerning different aspects of reliability and validity confirm the good psychometric properties of the instrument. The instrument can be used in chronic pain research as well as in clinical contexts. It is recommended that subjective disability data be complemented by behavioral observation and additional data sources (e.g. assessment of disability by the spouse/partner).
In the present study, Brandtstädter's (1992) distinction between assimilation and accommodation as two fundamental means of coping is applied to the field of chronic pain. Assimilative coping involves active attempts (e.g. instrumental activities, self-corrective actions, compensatory measures) to alter unsatisfactory life circumstances and situational constraints in accordance with personal preferences. Conversely, accommodative coping (e.g. downgrading of aspirations, positive reappraisal, self-enhancing comparisons) is directed towards a revision of self-evaluative and personal goal standards in accordance with perceived deficits and losses. Our research is based on the assumption that chronic pain can be described as a major source of threat or impediment to personal goals. When goals are no longer perceived to be attainable through active-assimilative coping efforts, accommodative coping should become increasingly important in dealing with chronic pain. In a study of 120 chronic pain patients, dispositional differences in assimilative (tenacious goal pursuit) and accommodative coping tendencies (flexible goal adjustment), as well as measures of pain-related coping and adjustment (depression, pain-related disability, pain intensity) were assessed. The results suggest that accommodative coping functions as a protective resource by preventing global losses in the psychological functioning of chronic pain patients and maintaining a positive life perspective. Most important, the ability to flexibly adjust personal goals attenuated the negative impact of the pain experience (pain intensity, pain-related disability) on psychological well-being (depression). Furthermore, pain-related coping strategies led to a reduction of disability only when accompanied by a high degree of flexible goal adjustment. The theoretical and clinical implications of these findings for coping research and the treatment of chronic pain patients are discussed.
This study examined the relationship between chronic pain acceptance and affective well-being from a coping perspective. One hundred-fifty patients from a multidisciplinary pain centre provided self-report data including measures of pain acceptance, positive and negative affect, and accommodative flexibility. The bivariate and multiple correlation patterns were consistent with the assumption that pain willingness (the attitudinal component of pain acceptance including the recognition of the uncontrollability of pain) primarily reduces negative affect, whereas activity engagement (the behavioural component of pain acceptance including the pursuit of life activities despite pain) additionally produces positive affect. The data furthermore suggested activity engagement as a mediating link between pain willingness and positive affect. Moderation analyses showed that accommodative flexibility (the general readiness to adjust personal goals to situational constraints) facilitates both pain willingness and activity engagement--especially when average pain intensity is high. In sum, the results support the view that chronic pain patients' well-being is closely tied to the maintenance of life activities which presupposes an accepting attitude towards pain.
The German CPAQ scale is a useful German-language instrument for the measurement of acceptance and shows good psychometric properties. The study confirms that acceptance is not an expression of a physiologically based indolence.
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