Erfaringer med intervensjonsforsøk i yrkesepidemiologi: Basert på studier av miljøtiltak for å forbedre inneklima i kontormiljø
DOI:
https://doi.org/10.5324/nje.v9i1.446Abstract
SAMMENDRAG
Basert på to intervensjonsforsøk rettet mot helseeffekter i hud og øvre luftveier før og etter inneklimatiltak,
drøftes erfaringer med design, metoder og analyse av data. Intervensjonene som ble prøvet ut var
antistatisk behandling av dataskjerm (n=117) og storrengjøring i kontormiljø (n=104). Det ble målt
støvkonsentrasjon under vanlig arbeid med direktevisende partikkelteller. Ved støvkonsentrasjoner > 50
μg/m
3 hadde tiltakene effekt. Antistatisk behandling av skjermen førte til reduserte hudplager i ansiktet.
Kolorimetrisk måling av rødfarge i ansiktet viste ingen forskjeller mellom intervensjon og placebo.
Rengjøring av enkeltkontorer førte til reduserte slimhinneplager i øvre luftveier. Personer med tendens
til redusert nesepassasje viste økning av hulmål-parametre, målt med akustisk rhinometri. I begge
forsøk ble endring i helsevariabler før-etter i intervensjonsgruppen sammenlignet med endring i
kontrollgruppen. Det konkluderes med at intervensjon som metode i arbeidsmedisinsk forskning er
ressurskrevende, men har en rekke fordeler som metoden deler med klinisk kontrollerte forsøk.
Skyberg K, Skulberg K.
Experiences from intervention trials in occupational epidemiology,
based on studies of measures to improve indoor air in offices.
Nor J Epidemiol
ENGLISH SUMMARY
Based on two intervention trials on health effects in skin and upper airways, before and after indoor air
quality measures, experience with design, methods and data analysis are discussed. Applied interventions
were antistatic treatment of VDU (n=117) and comprehensive cleaning of the office (n=104). Dust
concentrations during usual work were measured, using a particle counter. The interventions showed
effect when the dust concentration was > 50 μg/m
3. Antistatic treatment of the VDU lead to reduced
facial skin symptoms. Colorimetric measurements, however, showed no differences between the intervention
and control groups. Cleaning of single offices lead to a reduction of mucosal complaints in the
upper airways. Persons with a tendency to reduced nasal passage showed an increase in nasal volume
parameters, measured by acoustic rhinometry. In both trials the differences in health indicators before
and after in the intervention group were compared to differences in the control group. It is concluded
that intervention methods used in occupational health research are resource demanding, but have a
number of advantages that this method shares with controlled clinical trials.
1999; 9 (1): 71-77.Downloads
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