The relationship between ambient ultraviolet radiation (UVR) and objectively measured personal UVR exposure dose is modified by season and latitude
Data(s) |
2014
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Resumo |
Despite the widespread use of ambient ultraviolet radiation (UVR) as a proxy measure of personal exposure to UVR, the relationship between the two is not well-defined. This paper examines the effects of season and latitude on the relationship between ambient UVR and personal UVR exposure. We used data from the AusD Study, a multi-centre cross-sectional study among Australian adults (18-75 years), where personal UVR exposure was objectively measured using polysulphone dosimeters. Data were analysed for 991 participants from 4 Australian cities of different latitude: Townsville (19.3 °S), Brisbane (27.5 °S), Canberra (35.3 °S) and Hobart (42.8 °S). Daily personal UVR exposure varied from 0.01 to 21 Standard Erythemal Doses (median=1.1, IQR: 0.5–2.1), on average accounting for 5% of the total available ambient dose. There was an overall positive correlation between ambient UVR and personal UVR exposure (r=0.23, p<0.001). However, the correlations varied according to season and study location: from strong correlations in winter (r=0.50) and at high latitudes (Hobart, r=0.50; Canberra, r=0.39), to null or even slightly negative correlations, in summer (r=0.01) and at low latitudes (Townsville, r=-0.06; Brisbane, r=-0.16). Multiple regression models showed significant effect modification by season and location. Personal exposure fraction of total available ambient dose was highest in winter (7%) and amongst Hobart participants (7%) and lowest in summer (1%) and in Townsville (4%). These results suggest season and latitude modify the relationship between ambient UVR and personal UVR exposure. Ambient UVR may not be a good indicator for personal exposure dose under some circumstances. |
Formato |
application/pdf |
Identificador | |
Publicador |
Royal Society of Chemistry |
Relação |
http://eprints.qut.edu.au/77434/3/77434.pdf DOI:10.1039/C4PP00322E Sun, Jiandong, Lucas, Robyn, Harrison, Simone, van der Mei, Ingrid, Armstrong, Bruce K., Nowak, Madeliene, Brodie, Alison, & Kimlin, Michael (2014) The relationship between ambient ultraviolet radiation (UVR) and objectively measured personal UVR exposure dose is modified by season and latitude. Photochemical & Photobiological Sciences, 13, 1711--1718. http://purl.org/au-research/grants/NHMRC/497220 |
Direitos |
Copyright 2013 Royal Society of Chemistry |
Fonte |
Faculty of Health; Institute of Health and Biomedical Innovation; School of Public Health & Social Work |
Palavras-Chave | #111706 Epidemiology #Ultraviolet radiation #UVR #Personal exposure #Ambient UVR #Seasonality #Latitude |
Tipo |
Journal Article |