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Bispebjerg Hospital - a part of Copenhagen University Hospital
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Adult UVR exposure changes with life stage - a 14-year follow-up study using personal electronic UVR dosimeters

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DOI

  1. Personal electronic UVR dosimeter measurements: specific and general uncertainties

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  2. Pigment genes not skin pigmentation affect UVB-induced vitamin D

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  3. The half-life of 25(OH)D after UVB exposure depends on gender and vitamin D receptor polymorphism but mainly on the start level

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  4. UVR: sun, lamps, pigmentation and vitamin D

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  5. Major inter-personal variation in the increase and maximal level of 25-hydroxy vitamin D induced by UVB

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  1. Melanin has a Small Inhibitory Effect on Cutaneous Vitamin D Synthesis: A Comparison of Extreme Phenotypes

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  2. Skin surface Protoporphyrin IX fluorescence is associated with epidermal but not dermal fluorescence intensities

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  3. Measurements of sun sensitivity in five European countries confirm the relative nature of Fitzpatrick skin phototype scale

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Over a period spanning 14 years (1999-2001, 2006 and 2012), 31 volunteers participated in sun behaviour studies with the same protocol wearing a personal, electronic wrist-borne UVR dosimeter and completed sun exposure diaries resulting in a total of 15 946 measurements days (126 days per person per year). The participants individually maintained their UVR dose level and behaviour over the years. No statistically significant differences were seen from year to year in the "estimated annual UVR dose", the "mean UVR dose per day", the "mean percentage of ambient UVR", "days sunbathing to get a tan", "days with intermittent exposure" or in "sunburn episodes". The 20 participants still active in the labour market used sunscreen on more days in 2012 than in 1999 (p = 0.019) and with a significantly higher SPF (sun protecting factor (p < 0.001)) resulting in significantly fewer days with risk behaviour without sunscreen applied in 2012 than in 2006 (p < 0.001) and 1999 (p < 0.003). This was in contrast to the 11 participants who retired during the study period. The retired group received a non-significant 45% higher UV dose in 2012 than in 1999 (p = 0.054). In an additional study, nine 30-year-old indoor workers (high school students in the 1999 study) had changed their sun exposure pattern and had fewer days sunbathing (p = 0.008) and fewer risk behaviour days without sunscreen applied in 2012 than in 1999 (p = 0.002). Conclusion: The participants still active in the labour market maintained their sun exposure behaviour over a 14-year period. The retirees had a higher UVR dose and riskier exposure behaviour after retirement, while the high school students had changed to less risky sun behaviour on becoming indoor workers.

Original languageEnglish
JournalPhotochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology
Volume18
Issue number2
Pages (from-to)467-476
Number of pages10
ISSN1474-905X
DOIs
Publication statusPublished - 13 Feb 2019

    Research areas

  • Adult, Electrical Equipment and Supplies, Female, Follow-Up Studies, Humans, Male, Radiation Exposure/analysis, Radiometry/instrumentation, Risk-Taking, Sunburn/prevention & control, Sunscreening Agents/pharmacology, Ultraviolet Rays

ID: 59055301