Table 1

Identification and summary of retrospective cohort studies on the incidence of KD in workers exposed and unexposed to hand-arm vibrations
Reference Professional sector Country Number of workers Number of KD cases among exposed Control group Diagnostic criteria Anamnesis Clinical examination Exposition period Confounding variables Author's conclusion regarding a causal relationship
Decoulx P, 1957 underground workers France 1 330 9 none pa x-ray none yes 10, 13 and 13 years 5 with trauma anamnesis, 1 without exposition to vibrations no
Roche,1961 underground workers France 250 2 none not specified partially interviewed partially not specified not specified no
Kumlin, 1973 chain saw worker Finland 35 1 age-matched from the radiological archives pa and lat. x-ray not specified not specified not specified not specified yes
Horváth, 1973 chain saw worker Hungary 450 6 450 age-matched pa x-ray none none 5, 7, 8 and 9 years 2 out of 6 with trauma anamnesis yes
Laitinen, 1974 chain saw worker Finland 359 7 none pa x-ray questionnaire none not specified not specified yes
Suzuki, 1978 chain saw worker Japan 580 0 90 forestry workers pa and lat. x-ray none none not specified not specified no
Härkönen, 1984 chain saw worker Finland 279 3 178 peat bog workers pa x-ray Interview yes on average 10.4 years 4 out of 5 with trauma anamnesis no
Total: 1953 28

Four retrospective cohort studies (purple fill color) among chain-saw workers were included in a meta-analysis with 1344 exposed and 753 unexposed workers.

Stahl et al.

Stahl et al. BMC Musculoskeletal Disorders 2012 13:225   doi:10.1186/1471-2474-13-225

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