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The Capital Region of Denmark - a part of Copenhagen University Hospital
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Exposure-response relationships between movements and postures of the wrist and carpal tunnel syndrome among male and female house painters: a retrospective cohort study

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  1. Exposure to cholinesterase inhibiting insecticides and blood glucose level in a population of Ugandan smallholder farmers

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  2. Movements of the wrist and the risk of carpal tunnel syndrome: a nationwide cohort study using objective exposure measurements

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  3. Night work and miscarriage: a Danish nationwide register-based cohort study

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  4. Night work and sick leave during pregnancy: a national register-based within-worker cohort study

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  1. Cardiovascular disease and long-term occupational exposure to ultrafine particles: A cohort study of airport workers

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  2. Occupational lifting predicts hospital admission due to low back pain in a cohort of airport baggage handlers

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  3. Knee osteoarthritis among airport baggage handlers: A prospective cohort study

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  4. Movements of the wrist and the risk of carpal tunnel syndrome: a nationwide cohort study using objective exposure measurements

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OBJECTIVES: To investigate exposure-response relationships between measured movements and postures of the wrist and the incidence of carpal tunnel syndrome (CTS), and any modifications by sex.

METHODS: In 2011, we established a historical cohort of 9364 members of the Painters' Union in Denmark. Self-reported task distributions were obtained by questionnaire (53% responded) and combined with sex-specific task exposure matrices to get individual estimates of exposure intensity, that is, velocity of wrist flexion/extension, mean power frequency (MPF) and non-neutral wrist postures. Exposure duration was assessed from yearly working proportions. Registered first-time hospital discharge CTS diagnoses and CTS surgery were collected as outcomes. The cohort was followed from 1994 to 2010. Log-linear Poisson regression was used.

RESULTS: For CTS diagnoses, the adjusted incidence rate ratios (IRRs) increased with increasing wrist velocity (IRR=1.37 (95% CI 1.10 to 1.71) per °/s) and MPF (IRR=1.53 (95% CI 1.21 to 1.91) per 0.01 Hz). For CTS surgery, the results were similar. The outcomes were not related to non-neutral postures or exposure duration. The adjusted IRRs for women were higher than those for men. There were no multiplicative interaction effects between exposure intensity, exposure duration and sex. However, the absolute incidence rates (IRs) increased at a steeper rate for women than for men, indicating an additive interaction.

CONCLUSIONS: The incidence of CTS increased with increasing velocity of wrist flexion/extension and MPF of wrist movements. The relative increase in incidence rates was the same for women and men, but the absolute incidence rates increased at a steeper rate for women than for men.

Original languageEnglish
JournalOccupational and Environmental Medicine
Volume73
Issue number6
Pages (from-to)401-8
Number of pages8
ISSN1351-0711
DOIs
Publication statusPublished - Jun 2016

    Research areas

  • Journal Article

ID: 49587091