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Neighbourhood sampling framework

Neighbourhood sampling framework. Ronny Klæboe Institute of Transport Economics Oslo, Norway. Environmental impacts often mapped through national surveys of life quality and living conditions. Utilises a sample frame historically constructed for merkantile/-demographic purposes

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Neighbourhood sampling framework

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  1. Neighbourhood sampling framework Ronny Klæboe Institute of Transport Economics Oslo, Norway

  2. Environmental impacts often mapped through national surveys of life quality and living conditions • Utilises a sample frame historically constructed for merkantile/-demographic purposes • Often exposure estimates are lacking or of poor quality • There are usually no inventories of measures or monitoring of policies in place • Only impacts (annoyance subjective health impacts) are dealt with – not possible modifying factors etc.

  3. The sampling frame is not adapted to map exposures/environmental impacts in city areas • Environmental exposures are related to transportation sources – road vehicles, trains and aircraft that have local impacts • Exposures of area, line and point sources + propagation etc. often dealt with by acoustic, vibrational and air pollution experts utilising non-uniform methods

  4. What does this mean ? • A lot of interview resources go into eliciting answers from people that are not impacted • Gradients where impacts change as a result of increasing exposure receive inadequate attention • Exposure is not described with sufficient precision due to the disperse locations of the subjects/lack of measurement stations etc.

  5. A possible solution: • Utilise neighbourhood impact maps to stratify the city areas • Choose a sample of these with different environmental quality • Monitor/measure these to improve exposure mapping quality • Draw the sample from these locations to obtain proper focus of the interview resources

  6. Example of a noise impact map

  7. How can we deal with different impacts such as from noise and air pollution?

  8. If interview results are to map changes due to central/regional and local measures to reduce pollution: • It becomes necessary to monitor the implementation of measures – how else can we determine whether changes in environmental impacts are due to the initiatives ? • It becomes necessary to monitor other changes that might impact the changes of impacts in order to distinguish between the causal/ modifying factors

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