title: Prevalence of rheumatic regional pain syndromes in Latin-American indigenous groups: a census study based on COPCORD methodology and syndrome-specific diagnostic criteria.
abstract: This study assessed the overall and specific prevalence of the main rheumatic regional pain syndromes (RRPS) in four Latin-American indigenous groups. A Community Oriented Program for Control of Rheumatic Diseases (COPCORD) methodology-based census study was performed in 4240 adults (participation rate: 78.88 %) in four indigenous groups: Chontal (Oaxaca, Mexico, n = 124), Mixteco (Oaxaca, Mexico; n = 937), Maya-Yucateco (Yucatán, Mexico; n = 1523), and Qom (Rosario, Argentina; n = 1656). Subjects with musculoskeletal pain were identified using a cross-cultural, validated COPCORD questionnaire administered by bilingual personnel, and reviewed by general practitioners or rheumatologists using standardized case definitions for the 12 most frequent RRPS. The overall prevalence of RRPS was confirmed in 239 cases (5.64 %, 95 % CI: 4.98-6.37). The prevalence in each group was Chontal n = 19 (15.32 %, 95 % CI: 10.03-22.69); Maya-Yucateco n = 165 (10.83 %, 95 % CI: 9.37-12.49); Qom n = 48 (2.90 %, 95 % CI: 2.19-3.82); and Mixteco n = 7 (0.75 %, 95 % CI: 0.36-1.53). In the whole sample, the syndrome-specific prevalence was rotator cuff tendinopathy: 1.98 % (95 % CI: 1.60-2.45); lateral epicondylalgia: 0.83 % (95 % CI: 0.59-1.15); medial epicondylalgia: 0.73 % (95 % CI: 0.52-1.04); biceps tendinopathy: 0.71 % (95 % CI: 0.50-1.01); anserine syndrome: 0.64 % (95 % CI: 0.44-0.92); inferior heel pain: 0.61 % (95 % CI: 0.42-0.90); trochanteric syndrome: 0.49 % (95 % CI: 0.25-0.64); de Quervain's tendinopathy: 0.45 % (95 % CI: 0.29-0.70); trigger finger: 0.42 % (95 % CI: 0.27-0.67); carpal tunnel syndrome: 0.28 % (95 % CI: 0.16-0.49); Achilles tendinopathy (insertional): 0.12 % (95 % CI: 0.05-0.28); and Achilles tendinopathy (non-insertional): 0.07 % (95 % CI: 0.02-0.21). Leaving aside the comparison between Maya-Yucateco and Chontal groups (p = 0.18), we found significant differences (p < 0.001) in overall RRPS prevalence between the remaining pairs of indigenous groups. Syndrome-specific prevalences were also different between groups. Our findings support the hypothesis that overall RRPS prevalence and syndrome-specific prevalences are modulated by population-specific factors.
authors.affiliation: Unidad de Investigación, Hospital Regional de Alta Especialidad de la Península de Yucatán, Secretaría de Salud, Calle 7 No. 433 por 20 y 22, Fracc, Altabrisa, C.P. 97130, Mérida, Yucatán, Mexico. nemegyei@yahoo.com.mx.
authors.forename: José
authors.initials: J
authors.lastname: Alvarez-Nemegyei
authors.affiliation: Rheumatology Unit, Hospital General de México "Eduardo Liceaga", Secretaría de Salud, México, D.F., Mexico.
authors.forename: Ingris
authors.initials: I
authors.lastname: Peláez-Ballestas
authors.affiliation: Centro de Especialidades Médicas Ambulatorias de Rosario (CEMAR), Secretaría de Salud Pública, Municipalidad de Rosario, Santa Fe, Argentina.
authors.forename: Mario
authors.initials: M
authors.lastname: Goñi
authors.affiliation: Unidad de Posgrado, UNAM, México, Mexico.
authors.forename: Flor
authors.initials: F
authors.lastname: Julián-Santiago
authors.affiliation: Rheumatology Unit, Hospital General de México "Eduardo Liceaga", Secretaría de Salud, México, D.F., Mexico.
authors.forename: Conrado
authors.initials: C
authors.lastname: García-García
authors.affiliation: Hospital Provincial de Rosario, Santa Fe, Argentina.
authors.forename: Rosana
authors.initials: R
authors.lastname: Quintana
authors.affiliation: Ministerio de Salud de la Provincia de Santa Fe, Rosario, Santa Fe, Argentina.
authors.forename: Adriana M R
authors.initials: AM
authors.lastname: Silvestre
authors.affiliation: Hospital Regional de Alta Especialidad, Secretaría de Salud, Oaxaca, Mexico.
authors.forename: Imelda
authors.initials: I
authors.lastname: García-Olivera
authors.affiliation: IROF, Rosario, Argentina.
authors.forename: Nora A
authors.initials: NA
authors.lastname: Mathern
authors.affiliation: School of Rehabilitation Science, McMaster University, Hamilton, Canada.
authors.forename: Adalberto
authors.initials: A
authors.lastname: Loyola-Sanchez
authors.affiliation: Ministerio de Salud de la Provincia de Santa Fe, Rosario, Santa Fe, Argentina.
authors.forename: Silvana
authors.initials: S
authors.lastname: Conti
authors.affiliation: Ministerio de Salud de la Provincia de Santa Fe, Rosario, Santa Fe, Argentina.
authors.forename: Alvaro J
authors.initials: AJ
authors.lastname: Sanabria
authors.affiliation: Hospital Provincial de Rosario, Santa Fe, Argentina.
authors.forename: Bernardo A
authors.initials: BA
authors.lastname: Pons-Estel
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001118:Argentina / Q000453:epidemiology; D019352:Censuses; D005260:Female; D006801:Humans; D007197:Indians, Central American; D007199:Indians, South American; D008297:Male; D008800:Mexico / Q000453:epidemiology; D008875:Middle Aged; D059352:Musculoskeletal Pain / Q000175:diagnosis* / Q000208:ethnology*; D012216:Rheumatic Diseases / Q000145:classification / Q000208:ethnology*; D011795:Surveys and Questionnaires; D055815:Young Adult
keywords: Bursitis; Epidemiology; Ethnicity; Prevalence; Rheumatic regional pain syndrome; Soft tissue rheumatology; Tendonitis
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