Syndemic and syndemogenesis of low back pain in Latin-American population: a network and cluster analysis.

Introduction: Although low back pain (LBP) is a high-impact health condition, its burden has not been examined from the syndemic perspective.

Objective: To compare and assess clinical, socioeconomic, and geographic factors associated with LBP prevalence in low-income and upper-middle-income countries using syndemic and syndemogenesis frameworks based on network and cluster analyses.

Methods: Analyses were performed by adopting network and cluster design, whereby interrelations among the individual and social variables and their combinations were established.

Burden of rheumatoid arthritis on patients' work productivity and quality of life.

Background: To determine the burden of Rheumatoid Arthritis (RA) on patients' work productivity and health related quality of life (HRQoL), and examine the influence of several exposure variables; to analyze the progression of RA over 1 year and its impact on work productivity and HRQoL.

Methods: International multicenter prospective survey including patients in 18 centers in Argentina, Brazil, Colombia and Mexico with diagnosis of RA and aged between 21-55 years. The following standard questionnaires were completed at baseline and throughout a 1-year follow-up: WPAI:RA, WALS, WLQ-25, EQ-5D-3 L and SF-36.

Coping strategies for health and daily-life stressors in patients with rheumatoid arthritis, ankylosing spondylitis, and gout: STROBE-compliant article.

This article aims to identify the strategies for coping with health and daily-life stressors of Mexican patients with chronic rheumatic disease. We analyzed the baseline data of a cohort of patients with rheumatoid arthritis (RA), ankylosing spondylitis (AS), and gout. Their strategies for coping were identified with a validated questionnaire.

Factors associated with treatment of osteoarthritis: Analysis of a COPCORD study in Nuevo León, México.

Introduction: Osteoarthritis (OA) is the most prevalent rheumatic disease in Mexico. Treatment involves pharmacological and non-pharmacological strategies.

Objective: To describe the factors associated with treatment of osteoarthritis in the urban and rural population of Nuevo León.

Developing Community-Based Rehabilitation Programs for Musculoskeletal Diseases in Low-Income Areas of Mexico: The Community-Based Rehabilitation for Low-Income Communities Living With Rheumatic Diseases (CONCORD) Protocol.

Background: The negative impact of musculoskeletal diseases on the physical function and quality of life of people living in developing countries is considerable. This disabling effect is even more marked in low-socioeconomic communities within developing countries. In Mexico, there is a need to create community-based rehabilitation programs for people living with musculoskeletal diseases in low-socioeconomic areas.

The Social Gap Index and the prevalence of osteoarthritis in the community: a cross-sectional multilevel study in Mexico.

Multilevel studies have gained importance for highlighting social inequalities in health. These associations have been reported previously in diseases such as arthritis and chronic pain. We conducted a cross-sectional study using multilevel analysis to identify individual and contextual factors associated with the variation of prevalence of osteoarthritis (OA) in the Mexican population.

Barriers to implementing the "2008 Mexican Clinical Practice Guideline recommendations for the management of hip and knee osteoarthritis" in primary healthcare practice.

Objective: To evaluate the implementability of the "2008 Mexican Clinical Practice Guideline for the management of hip and knee osteoarthritis at the primary level of care" within primary healthcare of three Mexican regions using the Guideline Implementability Appraisal methodology version 2 (GLIA.v2).

Methods: Six family physicians, representing the South, North, and Central Mexico, and one Mexican physiatrist evaluated the 45 recommendations stated by the Mexican guideline.

Impact of genetic ancestry and sociodemographic status on the clinical expression of systemic lupus erythematosus in American Indian-European populations.

Objective: American Indian-Europeans, Asians, and African Americans have an excess morbidity from systemic lupus erythematosus (SLE) and a higher prevalence of lupus nephritis than do Caucasians. The aim of this study was to analyze the relationship between genetic ancestry and sociodemographic characteristics and clinical features in a large cohort of American Indian-European SLE patients.

Methods: A total of 2,116 SLE patients of American Indian-European origin and 4,001 SLE patients of European descent for whom we had clinical data were included in the study.

Validity of the COPCORD core questionnaire as a classification tool for rheumatic diseases.

Objective: Rheumatic diseases are vastly underdiagnosed and undertreated, particularly among minorities and those of low socioeconomic status. The WHO-ILAR Community Oriented Program in the Rheumatic Diseases (COPCORD) advocates screening of musculoskeletal complaints in the community. The objective of this study was to evaluate the performance of the COPCORD Core Questionnaire (CCQ) as a diagnostic tool for rheumatic diseases.

Prevalence of back pain in the community. A COPCORD-based study in the Mexican population.

Objective: Back pain (BP) is frequent in the community; its prevalence in México is 6%. Our objective was to determine the prevalence of BP in Mexican communities and determine its most important characteristics.

Methods: A cross-sectional study of individuals aged > 18 years was conducted in Mexico City and in urban communities in the state of Nuevo León.

Prevalence of rheumatic regional pain syndromes in adults from Mexico: a community survey using COPCORD for screening and syndrome-specific diagnostic criteria.

Objective: To assess the prevalence of rheumatic regional pain syndromes (RRPS) in 3 geographical areas of México using the Community Oriented Program in the Rheumatic Diseases (COPCORD) screening methodology and validate by expert consensus on case-based definitions.

Methods: By means of an address-based sample generated through a multistage, stratified, randomized method, a cross-sectional survey was performed on adult residents (n = 12,686; age 43.6 ± 17.

Epidemiology of rheumatic diseases. A community-based study in urban and rural populations in the state of Nuevo Leon, Mexico.

Objective: To estimate the prevalence of rheumatic diseases in rural and urban populations using the WHO-ILAR COPCORD questionnaire.

Methods: We conducted a cross-sectional home survey in subjects > 18 years of age in the Mexican state of Nuevo Leon. Results were validated locally against physical examination in positive cases according to an operational definition by 2 rheumatologists.

Epidemiology of the rheumatic diseases in Mexico. A study of 5 regions based on the COPCORD methodology.

Objective: To estimate the prevalence of musculoskeletal (MSK) disorders and to describe predicting variables associated with rheumatic diseases in 5 regions of México.

Methods: This was a cross-sectional, community-based study performed in 5 regions in México. The methodology followed the guidelines proposed by the Community Oriented Program for the Control of the Rheumatic Diseases (COPCORD).

Antineutrophil cytoplasm autoantibodies in patients with tuberculosis are directed against bactericidal/permeability increasing protein and are detected after treatment initiation.

Objectives: To determine the prevalence of antineutrophil cytoplasm autoantibodies (ANCA) and its antigenic specificities in sera of patients with pulmonary tuberculosis (Tb) before and after treatment.

Patients And Methods: Sixty-eight patients with culture-proven Tb were studied for the presence of ANCA, both by indirect immunofluorescence (IIF) and ELISA against proteinase-3 (PR3), myeloperoxidase (MPO) and bactericidal/permeability increasing protein (BPI). They were sought before treatment and in 52 of them also after therapy for the infection.