Physical activity and sleep differences between osteoarthritis, rheumatoid arthritis and non-arthritic people in China: objective versus self report comparisons.

Background: Objectively measured differences in physical activity (PA) and sleep have been documented among people with osteoarthritis (OA) and rheumatoid arthritis (RA) compared to non-arthritic controls. However, it is not clear whether OA and RA subgroups also differ on these indexes or the extent to which distinct arthritis subgroups versus controls can be accurately identified on the basis of objective PA and sleep indexes compared to self-report responses on questionnaires. This study addressed these gaps.

Pre-surgery beliefs about pain and surgery as predictors of acute and chronic post-surgical pain: A prospective cohort study.

Background: Chronic pain post-surgical pain (CPSP) is common and has far-reaching negative consequences for patients, yet relatively few studies have evaluated the impact of both deficit- and resource-based beliefs about pain and surgery on subjective intensities of acute and chronic post-surgical pain. To address this issue a prospective cohort study was performed.

Method: 259 consecutive surgery patients from general surgery, gynecology, and thoracic departments completed a self-report battery of demographics, pain experiences, and psychological factors 24 h before surgery (T1) and provided follow-up pain intensity ratings 48 h-72 h after surgery (T2), and at a 4-month follow-up (T3).

Identifying At-Risk Subgroups for Acute Postsurgical Pain: A Classification Tree Analysis.

Objective: Acute postsurgical pain is common and has potentially negative long-term consequences for patients. In this study, we evaluated effects of presurgery sociodemographics, pain experiences, psychological influences, and surgery-related variables on acute postsurgical pain using logistic regression vs classification tree analysis (CTA).

Design: The study design was prospective.

Toward Identifying Moderators of Associations Between Presurgery Emotional Distress and Postoperative Pain Outcomes: A Meta-Analysis of Longitudinal Studies.

Unlabelled: Presurgery emotional distress has had variable associations with outcomes of surgery in past narrative reviews. This meta-analysis was designed to evaluate the overall strengths of relations between presurgical emotional distress and key postsurgical pain outcomes (ie, pain intensity, analgesic use, functional impairment) and to identify moderators that might explain effect size heterogeneity between studies. PubMed, Web of Science, PsychINFO, Google Scholar, and Science Direct databases were searched to identify studies subjected to meta-analysis.

MPI profile classifications and associated clinical findings among litigating motor vehicle collision patients.

Objectives: The purpose of this study was to examine differences in precollision, pericollision, and postcollision clinical variables across litigating motor vehicle collision (MVC) patients who were classified as Dysfunctional (DYS), Interpersonally Distressed (ID), or Adaptive Copers (ACs) based on Multidimensional Pain Inventory (MPI) profile classifications.

Materials And Methods: A sample of 240 MVC patients who sustained serious physical injuries and experienced MVC-related chronic pain completed the MPI and provided responses to a semistructured psycholegal interview designed to elicit injury-related and pain-related symptoms and treatments, determine the presence and impact of precollision experiences, and render psychiatric diagnoses and ratings of psychological disability.

Results: A significant multivariate effect of MPI profile group on postcollision variables was revealed, with the DYS and ID groups reporting more pain sites than the AC group and the DYS group receiving more recommendations for treatment than the AC group.