Abstract
BackgroundFew studies in China have examined personal ultraviolet radiation (UVR) exposure using polysulfone dosimetry.MethodsIn this study, 93 mother and adolescent child pairs (N = 186) from two locations in China, one rural (higher latitude) and one urban (lower latitude), completed 3 days of personal UVR dosimetry and a sun/clothing diary, as part of a larger pilot study.ResultsThe average daily ambient UVR in each location as measured by dosimetry was 20.24 Minimal Erythemal Doses (MED) in the rural location and 20.53 MED in the urban location. Rural mothers had more average daily time outdoors than urban mothers (5.5 h, compared with 1.5 h, in urban mothers) and a much higher daily average personal UVR exposure (4.50 MED, compared with 0.78 MED in urban mothers). Amongst adolescents, rural males had the highest average daily personal UVR exposure, followed by rural females, urban females and urban males (average 2.16, 1.05, 0.81, and 0.48 MED, respectively).ConclusionsAlthough based on small numbers, our findings show the importance of geographic location, age, work/school responsibilities, and sex of the adolescents in determining personal UVR exposure in China. These results suggest that latitude of residence may not be a good proxy for personal UVR exposure in all circumstances.
Highlights
Few studies in China have examined personal ultraviolet radiation (UVR) exposure using polysulfone dosimetry
This paper will overview the methods, findings, functionality and limitations of using personal UVR dosimetry and a sun diary questionnaire in a pilot study of Chinese mothers and their teenage children conducted in two geographic regions in China
Prior to launching a wider-scale follow-up of the entire study population to assess the late effects of periconceptual folic acid, two pilot studies were conducted: the first to assess the ability to reconstruct and follow-up the Community Intervention Program (CIP) cohort by tracing and interviewing a sample of the original study participants [19], and the second to examine the feasibility of collecting extensive diet, physical activity and UVR exposure data in a subset of the first pilot study population [20]
Summary
Few studies in China have examined personal ultraviolet radiation (UVR) exposure using polysulfone dosimetry. This paper will overview the methods, findings, functionality and limitations of using personal UVR dosimetry and a sun diary questionnaire in a pilot study of Chinese mothers and their teenage children conducted in two geographic regions in China. It will 1) provide information on how latitude, occupation, age, sex and urban/rural residence impact on UVR exposure and sun protective behavior, and 2) assess the feasibility of this type of data collection and consider what modifications may be required before roll-out of the study on a large scale
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