Sleep disturbance and fatigue in multiple sclerosis: A systematic review and meta-analysis.

Sleep disturbance is common in people with multiple sclerosis and may worsen fatigue; however, the assessment of sleep-fatigue relationships varies across studies. To better understand sleep-fatigue relationships in this population, we conducted a systematic review and random effects meta-analyses for the associations between fatigue and 10 sleep variables: Sleep-disordered breathing, daytime sleepiness, sleep quality, insomnia, restless legs, number of awakenings, sleep efficiency, sleep latency, sleep duration, and wake after sleep onset. Of the 1062 studies screened, 46 met inclusion criteria and provided sufficient data for calculating Hedges' g. Study quality was assessed using the Newcastle-Ottawa Scale. Sample characteristics did not differ between the 10 analyses. Results indicated that sleep quality and insomnia (assessed via self-report or diagnostic criteria) were strongly associated with fatigue (all gs ≥ 0.80 and all ps < .001). In contrast, the number of awakenings and sleep duration (assessed objectively) were not significantly associated with fatigue. Remaining sleep variables yielded moderate, significant effects. Most effects did not vary based on study quality or sample demographics. Results highlight that insomnia and perceptions of poor sleep have a stronger link than objective sleep duration to fatigue in multiple sclerosis and may represent a more effective target for intervention.

Promoting equity at the population level: Putting the foundational principles into practice through disability advocacy.

Rehabilitation psychology is based on foundational principles that can guide us toward health equity among disabled and nondisabled communities. We summarize the literature on disparities in the disability community and underscore the urgency to address underlying inequities to eliminate disparities. We include examples of population-level interventions that promote equity in the disability community. We conclude with a call for a broader mission for rehabilitation psychologists based on the field's foundational principles, and outline emerging opportunities to widen our impact and advance equity. Our foundational principles, built on systems theory, call on rehabilitation psychologist to work at macrosystemic levels. As rehabilitation psychologists, we need to widen our focus from the micro (individual) to the macro (population) level. We need to bring the respect, dignity, and collaborative spirit that inspire our work with individuals to the broader community by advocating for structures and policies that promote equity for disabled persons. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

Socioeconomic status and race are correlated with affective symptoms in multiple sclerosis.

OBJECTIVE: Investigate the relationship between socioeconomic status (SES) and race with self-reported fatigue, depression, and anxiety levels in multiple sclerosis (MS). METHODS: Cross-sectional review of the MS Partners Advancing Technology and Health Solutions (MS PATHS) database for adults with MS in the United States. We evaluated race and socioeconomic status (available markers: insurance, employment status, or level of education) as predictors of fatigue, depression, and anxiety sub-scores of the Neuro-QoL (Quality of life in neurological disorders), with particular interest between Caucasians/whites (CA) and African Americans/blacks (AA). Multivariate linear regression models included as covariates age, sex, disability status, smoking status, body mass index, and disease-modifying therapy. RESULTS: 7,430 individuals were included; compared to CA, AA tended to be younger, more female-predominant, and had a higher level of disability. AA had completed slightly less education, had a higher level of Medicaid coverage or uninsured status, and had higher rates of unemployed or disabled status. In the univariate model, markers of lower SES, by whichever definition we used, correlated with worse affective symptoms. In the multivariate model stratified by race, CA showed similar trends. In contrast, in AA, only lower SES by employment status was correlated with worse affective symptoms. In both CA and AA, moderate and severe level of disability correlated with worse affective symptoms. CONCLUSION: SES and race may influence affective symptoms reported by individuals with MS. The reasons for the correlation are likely multifactorial. Longitudinal studies should strive to identify factors associated with risk of affective symptoms in MS that may be modifiable.

Psychometric properties of the Mississippi Scale for Combat-Related Posttraumatic Stress Disorder based on veterans' period of service.

The Mississippi Scale for Combat-Related Posttraumatic Stress Disorder (M-PTSD) is a 35-item screening instrument for combat-related PTSD (Keane, Caddell, & Taylor, 1988) that has been normed largely on veterans from the Vietnam era. Research on its psychometric properties with veterans across different periods of service (POS) remains limited; however, this is an important research endeavor because of the uniqueness in experiences across eras which may influence PTSD rates, symptom expression/complaints, and treatment completion/outcomes. In this study, our objective was to examine the instrument's properties, replicating Keane et al.'s (1988) methodologies, with veterans from World War II, Korean, Vietnam, post-Vietnam, and Persian Gulf (pre- and post-9/11) eras. This retrospective cohort study involved the examination of medical records of 29,280 veterans receiving care across Veterans Affairs medical outpatient centers nationwide. The data revealed significant differences across POS in terms of M-PTSD total scores, F(4, 29,275) = 55.01, p = .000; therefore, analyses were conducted with the entire sample and with each POS. The instrument demonstrated high internal consistency with our sample (α = .92) and across POS (.91 to .92). Receiver operating characteristic curves identified cut-scores ranging from 86 to 112 across the POS with acceptable-to-good sensitivity (68% to 81%) and fair-to-acceptable specificity (61% to 70%), with lower scores among World War II and Korean era veterans compared with veterans from more recent conflicts. In terms of clinical implications, the M-PTSD is a brief, easily accessible, valuable screening tool for combat-related PTSD in veterans across a range of POS. Future studies should consider the methodologies utilized to diagnose PTSD and how this potentially impacts the instrument's properties. (PsycINFO Database Record (c) 2020 APA, all rights reserved).

Relationship of perceived stress and employment status in individuals with multiple sclerosis.

BACKGROUND: Many individuals with multiple sclerosis (MS) are unemployed relatively soon after diagnosis. There is a paucity of research on the relationship between psychological distress and employment status in persons with MS. OBJECTIVE: To explore the relative distress of employed versus unemployed individuals with MS. METHODS: Secondary cross-sectional analysis of a mailed survey. Variables were categorized by demographics (age, gender, education, marital status), disease (EDSS, MS symptom duration, fatigue, MS-type), and psychosocial factors (depression, anxiety, perceived stress, self-reported general cognitive concerns, self-reported executive dysfunction). Univariate logistic regression analysis was used to identify variables significantly associated with employment status. All significant variables were then included in a multivariate model to identify the most salient correlates. RESULTS: Univariate analyses identified 10 variables that were significantly associated with employment status: age, education, EDSS, MS symptom duration, MS-type, depression symptoms, perceived stress, fatigue, and self-reported cognitive symptoms. The multivariate model yielded four demographic and disease-related variables and one emotional distress variable (older age, moderate disability [EDSS], longer symptom duration, MS-type, higher perceived stress) as significant. CONCLUSIONS: After adjusting for disease variables, demographics, and significant psychosocial factors, perceived stress remained associated with employment status, such that greater perceived stress was associated with being unemployed.

Depressive symptoms and fatigue as predictors of objective-subjective discrepancies in cognitive function in multiple sclerosis.

OBJECTIVE: To examine the degree to which depressive symptoms and fatigue in individuals with multiple sclerosis (MS) are associated with discrepancies between subjective and objective cognitive impairment. METHODS: Ninety-nine adults with MS who were receiving care in a university-affiliated MS center completed the Patient Health Questionnaire-8 (PHQ-8), Fatigue Severity Scale (FSS), MS Neuropsychological Screening Questionnaire (MSNQ), and Brief International Cognitive Assessment for MS (BICAMS). Participants were classified as "Accurates," "Underestimators," or "Overestimators" based on discrepancies between their MSNQ (subjective) and BICAMS (objective) scores. Underestimators were individuals whose subjective scores were significantly worse than their objective scores. Overestimators exhibited the opposite profile. RESULTS: The PHQ-8 (r = 0.58) and FSS (r = 0.48) significantly correlated with the MSNQ, but not with the BICAMS (rs < 0.07). Underestimators (i.e., participants who underestimated their objective cognitive functioning) exhibited higher PHQ-8 and FSS scores compared to Accurates (ps < 0.01) and Overestimators (ps < 0.01). Optimal cut-scores of ≥6 on the PHQ-8 and ≥36 on the FSS provided fair accuracy (78% and 74%) for identifying Underestimators. Identification of Underestimators based on PHQ-8 and FSS scores was not moderated by any demographic or MS clinical variables. CONCLUSIONS: In the presence of mild levels of depression or significant fatigue, subjective cognitive measures are unlikely to provide accurate estimates of objective cognitive functioning. Objective cognitive measures are required for accurate identification of cognitive impairment.

Dementia and Cognitive Impairment Among U.S. Veterans With a History of MDD or PTSD: A Retrospective Cohort Study Based on Sex and Race.

Objective: The aim of this study was to examine major depressive disorder (MDD) and posttraumatic stress disorder (PTSD) diagnosed at age < 55 as predictors, and sex and race as potential moderators, of dementia and other forms of cognitive impairment. Method: Veterans (N = 4,800) aged ⩾ 56 years were grouped by psychiatric history, sex, and race. Hierarchical and stepwise regression were employed to determine significant predictors. Results: MDD and PTSD were associated with almost double the risk for developing dementia or cognitive impairment at age ⩾ 56. Sex, as a moderator, had small effects whereas race increased the risk almost twofold for Black veterans, given the presence of MDD history. Discussion: MDD and PTSD act as significant risk factors for dementia and other forms of cognitive impairment, and Black veterans, given a history of MDD, may be at an increased risk. An important endeavor for future research is to examine how this risk may vary across dementia subtypes and related conditions.

Diagnostic and Clinical Utility of the GAD-2 for Screening Anxiety Symptoms in Individuals With Multiple Sclerosis.

OBJECTIVE: To assess the diagnostic and clinical utility of the 2-item Generalized Anxiety Disorder Scale (GAD-2) for screening anxiety symptoms in individuals with multiple sclerosis (MS). DESIGN: Cross-sectional. SETTING: University-affiliated MS neurology and rehabilitation center. PARTICIPANTS: The sample comprised adults (N=99) (ages 19-72; mean ± SD=46.2±13.0; 75% women) with a physician-confirmed MS diagnosis who were receiving care in a university-affiliated MS center. Disease durations ranged from 1 to 37 years (mean ± SD=10.7±8.4). INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Participants completed the 7-item Generalized Anxiety Disorder Scale (GAD-7) and GAD-2. Internal consistency was calculated for both measures. Area under the receiver operating characteristics curve (AUC), the 95% confidence interval for the AUC, and Youden's J were calculated to determine the optimal GAD-2 cutoff score for identifying clinically significant anxiety symptoms, as defined by the previously validated GAD-7 cutoff score of ≥8. RESULTS: Internal consistency was excellent for the GAD-7 (Cronbach α=.91) and acceptable for the GAD-2 (α=.77), and the measures were highly correlated (r=.94). The GAD-2 had excellent overall accuracy for identifying clinically significant anxiety symptoms (AUC=0.97; 95% confidence interval, 0.94-1.00). A GAD-2 cutoff score of ≥3 provided an optimal balance of good sensitivity (0.87) and excellent specificity (0.92) for detecting clinically significant anxiety symptoms. Alternatively, a cutoff score of ≥2 provided excellent sensitivity (1.00) and fair specificity (0.76). CONCLUSIONS: The GAD-2 is a clinically useful and psychometrically valid tool for screening anxiety symptoms in MS rehabilitation and neurology care settings. Importantly, this tool has the potential to identify individuals with MS who are at risk for anxiety disorders and who may benefit from rehabilitation psychology interventions to ultimately improve functioning and quality of life.