Allan P. Shapiro

The factor structure of the Coping Strategies Questionnaire.

The Coping Strategies Questionnaire (CSQ) (Rosenstiel and Keefe 1983) is the most widely used measure of pain coping strategies. To date, with one exception (Tuttle et al. 1991), studies examining the factor structure of the CSQ have used the composite scores of its 8 a-priori theoretically derived scales rather than the 48 individual items. An examination of the match between the 8 theoretically derived scales and scales empirically extracted from an item analysis is lacking. Accordingly, the CSQ was administered to 126 chronic pain (whiplash) patients. Factor analyses of the individual items revealed an 8-factor structure to be uninterpretable. Of the 2-9-factor solutions tested, the 5-factor structure was the most interpretable: Factor 1, Distraction; Factor 2, Ignoring Pain Sensations; Factor 3, Reinterpreting Pain Sensations; Factor 4, Catastrophizing; Factor 5, Praying and Hoping. Eighteen Ph.D. or M.D. level clinicians classified items into their corresponding category with a high degree of accuracy (on average, 90.2%), attesting to the face and construct validity of the subscales. Four subscales, Catastrophizing, Reinterpreting Pain Sensations, Praying and Hoping and (to a lesser degree) Ignoring Pain Sensations, correspond with parallel subscales proposed by Rosensteil and Keefe (1983). The fifth subscale, Distraction, is comprised of items from their Diverting Attention and Increasing Activity Level subscales, suggesting that cognitive and behavioural distraction comprise 1 rather than 2 coping strategies. That CSQ items on the original Coping Self-Statements and the Increasing Pain Behaviour subscales failed to load consistently on any factor suggests that they do not reliably measure distinct coping strategies.(ABSTRACT TRUNCATED AT 250 WORDS)

The effect of litigation status on adjustment to whiplash injury

Study Design. This retrospective study examined the effect of civil litigation on reports of pain and disability in chronic pain patients who sustained whiplash injuries after a motor vehicle accident. Objectives. To examine the effect of litigation on adjustment to chronic pain. Summary of Background Data. A common methodologic weakness with many studies in this area is the composition of the nonlitigant group, which often includes individuals who have completed litigation as well as those who opted not to litigate. This introduces a confound in that litigant and nonlitigant groups differ not only with respect to litigation status but with respect to any factors that predispose one to litigate. Methods. Questionnaire data were obtained from 41 patients (current litigants) in the process of litigation and 21 patients (postlitigants) who had completed litigation. Subjects completed self‐report measures assessing demographic characteristics, psychological distress, sleep disturbance, employment status, and various pain indices. Results. There were no significant group differences in demographic characteristics, employment status, or psychological distress. Litigants, however, reported more pain than did postlitigants. Group differences in pain reports remained statistically significant even after controlling for length of time since accident and initial severity of the injuries. Conclusions. That litigation status did not predict employment status suggests that secondary gain does not figure prominently in influencing the functionality of these patients. The rather robust effect of litigation status on pain reports is discussed with respect to the potential mediational role of the stress of litigation.

Strategic-behavioral intervention in the treatment of chronic nonorganic motor disorders

Chronic nonorganic motor disorders pose particular difficulties because of a combination of diagnostic confusion and intractability to psychotherapeutic or behavioral interventions. Three cases are presented, all of whom failed a rehabilitation approach that emphasized basic behavioral principles of shaping and reinforcement. Despite this initial failure, all three patients showed dramatic and rapid improvement after implementation of an intervention combing elements of strategic and behavior therapy. The strategic element consisted of placing patients in a double bind by telling them full recovery constituted proof of an organic etiology and failure to recovery constituted conclusive evidence of a nonorganic or psychiatric etiology. These cases also illustrate the difficulty in distinguishing between conversion and factitious disorders.

Misdiagnosis of conversion disorders

Teasell RW, Shapiro AP: Misdiagnosis of conversion disorders. Am J Phys Med Rehabil 2002;81:236–240.Five cases are presented describing the clinical features for which they were referred and admitted to a rehabilitation unit and later identified as having been misdiagnosed as having a conversion disorder. The diagnoses were sarcoma-induced osteomalacia, cerebellar medulloblastoma, Huntington’s chorea, transverse myelitis, and lower extremity dystonia. A perceived history of psychological difficulties, an unusual neurologic presentation, and normal initial diagnostic testing in a female patient were associated with a misdiagnosis of conversion disorders; unfortunately, these factors also characterize actual conversion disorders.

Whiplash injuries: An update

Whiplash injuries remain a significant public health problem throughout the developed industrialized world, with significant socioeconomic consequences. Studies looking at the natural history of whiplash injuries have suffered from problems of selection bias, retrospective reviewing and unclear outcomes. Etiology continues to be controversial, largely because of the misconception that all soft tissue injuries heal within six weeks. Recent studies have implicated the cervical facet joint as a cause of whiplash injury pain. A recent treatment study that successfully eliminated whiplash-associated facet joint pain demonstrated abnormal psychological profiles secondary to pain which normalized with successful pain elimination. The impact of compensation on recovery remains controversial, while the concept that mild traumatic brain injury occurs in the absence of loss of consciousness has been largely refuted. The Quebec Task Force on Whiplash-Associated Disorders recently published a report in which the scientific literature was exhaustively reviewed and has made recommendations regarding the prevention and treatment of whiplash and its associated disorders. The Quebec Task Force highlighted the paucity of good scientific evidence; however, they still provided consensus treatment guidelines, which have not been validated. There continues to be a need for further research.

Strategic-behavioural intervention in the inpatient rehabilitation of non-organic (factitious/conversion) motor disorders

Conversion or factitious disorders manifesting as chronic motor disorders are difficult and complex management problems. A number of published case studies and series have illustrated that these patients may respond to a rehabilitation program emphasizing physical therapies and behaviour therapy. However, this standard behavioral approach was not successful with the majority of our patients. In contrast, an alternative strategic-behavioral rehabilitation approach developed for intractable cases proved highly effective. Among 17 patients who underwent the strategic behavioural approach, 13 showed complete or near complete resolution of symptomatology. Nine of these successfully treated patients had previously failed to improve using a standard behavioral rehabilitation program.

Mood, Disability, and Quality of Life among a Subgroup of Rheumatoid Arthritis Individuals with Experiential Avoidance and Anxiety Sensitivity

Objective. The current study aimed to identify and characterize distinct RA subgroups based on their level of EA and AS and compares the difference among the subgroups in mood, disability, and quality of life. Methods. Individuals with chronic pain for at least 3 months were recruited from an academic rheumatoid clinic. Participants were assessed for demographic, psychosocial, and personality measures. A two-step cluster analysis was conducted to identify distinct subgroups of patients. Differences in clinical outcomes were compared using the Multivariate ANOVA based on cluster membership. Results. From a total of 223 participants, three distinct subgroups were formed based on cluster analysis. Cluster 1 (N = 78) included those with low levels of both EA and AS. Cluster 2 (N = 81) consisted of individuals with moderate levels of EA and low levels AS. Cluster 3 (N = 64) included those with moderate levels of EA and high AS. Compared to those in Cluster 1, those in Cluster 3 had significantly higher levels of mood impairment and disability and lower quality of life (p < 0.05). Significantly lower levels of mood impairment were seen in Cluster 1 compared to Cluster 2 (p < 0.05). However, no significant difference in disability or quality of life was seen between the two groups. Conclusions. The three subgroups differed significantly in levels of impairment in mood, disability, and quality of life. However, levels of EA had a greater impact on disability and quality of life than AS.

Dispositional Affect in Unique Subgroups of Patients with Rheumatoid Arthritis

Background. Patients with rheumatoid arthritis may experience increased negative outcomes if they exhibit specific patterns of dispositional affect. Objective. To identify subgroups of patients with rheumatoid arthritis based on dispositional affect. The secondary objective was to compare mood, pain catastrophizing, fear of pain, disability, and quality of life between subgroups. Methods. Outpatients from a rheumatology clinic were categorized into subgroups by a cluster analysis based on dispositional affect. Differences in outcomes were compared between clusters through multivariate analysis of covariance. Results. 227 patients were divided into two subgroups. Cluster 1 (n = 85) included patients reporting significantly higher scores on all dispositional variables (experiential avoidance, anxiety sensitivity, worry, fear of pain, and perfectionism; all p < 0.001) compared to patients in Cluster 2 (n = 142). Patients in Cluster 1 also reported significantly greater mood impairment, pain anxiety sensitivity, and pain catastrophizing (all p < 0.001). Clusters did not differ on quality of life or disability. Conclusions. The present study identifies a subgroup of rheumatoid arthritis patients who score significantly higher on dispositional affect and report increased mood impairment, pain anxiety sensitivity, and pain catastrophizing. Considering dispositional affect within subgroups of patients with RA may help health professionals tailor interventions for the specific stressors that these patients experience.

Misdiagnosis of chronic pain as hysterical.

Chronic soft tissue pain disorders are not well understood from a pathophysiological standpoint. Psychological difficulties are common, clinical signs incompatible with conventional understanding of the nervous system are often present and these disorders usually fail to respond to medical interventions. When this constellation of factors is combined with unresolved litigation/compensation issues, it is not surprising that chronic pain disorders are often misdiagnosed as hysterical or psychological in origin. Unfortunately, this psychiatric diagnosis itself may have significant negative consequences which too often are not appreciated and can significantly increase the likelihood of treatment failure.

The Long Term Role of Anxiety Sensitivity and Experiential Avoidance on Pain Intensity, Mood, and Disability among Individuals in a Specialist Pain Clinic

Background. Anxiety sensitivity (AS) and experiential avoidance (EA) have been shown to have an interactive effect on the response an individual has to chronic pain (CP) potentially resulting in long term negative outcomes. Objective. The current study attempted to (1) identify distinct CP subgroups based on their level of EA and AS and (2) compare the subgroups in terms of mood and disability. Methods. Individuals with CP were recruited from an academic pain clinic. Individuals were assessed for demographic, psychosocial, and personality measures at baseline and 1-year follow-up. A cluster analysis was conducted to identify distinct subgroups of patients based on their level of EA and AS. Differences in clinical outcomes were compared using the Repeated Measures MANOVA. Results. From a total of 229 participants, five clusters were formed. Subgroups with lower levels of AS but similar high levels of EA did not differ in outcomes. Mood impairment was significantly greater among those with high levels of EA compared to lower levels (p < 0.05). Significant improvement in disability (p < 0.05) was only seen among those with lower levels of EA and AS. Conclusions. This cluster analysis demonstrated that EA had a greater influence on mood impairment, while both EA and AS levels affected disability outcomes among individuals with CP.