A study of residential radon in Sweden using multilevel analysis

Almasri, AbdullahKarlstads universitet,Avdelningen för nationalekonomi och statistik (författare)

A Swedish radon data set, consisting of more than 8000 measurements of residential radon levels in about 50% of the Swedish municipalities were analysed using a multilevel approach.The results were compared with those of a single-level analysis. We found that there was a significant variability between municipalities. The point estimates of the population mean radon levels were similar (geometric mean 60 Bq/m3 and arithmetic mean 106 Bq/m3).The analysis shows the advantages of multilevel modeling compared with a single-level OLS model.A single-level model results in too optimistic standard errors, about 25% of those of the multilevelmodel which can lead to erroneous conclusions.In a multilevel model including house type as a fixed effect (single-family house, row house, or apartment in multi-family house), the estimates of the fixed effect of house type were similar for the single-level and the multi-level models

Andersson, Eva M (författare)
Barregård, Lars (författare)
Karlstads universitetAvdelningen för nationalekonomi och statistik (creator_code:org_t)

Av författaren/redakt...: Almasri, Abdulla ...; Andersson, Eva M; Barregård, Lars

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