TY - JOUR
T1 - Validation of Questionnaire and Diary Measures of Time Outdoors Against an Objective Measure of Personal Ultraviolet Radiation Exposure
AU - Cust, Anne E.
AU - Fenton, Georgina L.
AU - Smit, Amelia K.
AU - Espinoza, David
AU - Dobbinson, Suzanne
AU - Brodie, Alison
AU - Dang, Huong Tran Cam
AU - Kimlin, Michael G.
N1 - Funding Information:
This study received funding from the Sydney Catalyst Translational Cancer Research Centre and The University of Sydney Cancer Strategic Priority Area for Research Collaboration (SPARC) Implementation Scheme. AE Cust received Career Development Fellowships from the National Health and Medical Research Council of Australia (NHMRC; 1063593) and Cancer Institute NSW (15/CDF/1-14). AK Smit received a Research Training Program (RTP) Stipend Scholarship and Merit Top Up Scholarship from the University of Sydney, and a Top Up Scholar Award from the Sydney Catalyst Translational Cancer Research Centre. MG Kimlin has supported through a Professorial Chair funding from Cancer Council Queensland.
Funding Information:
Acknowledgements—This study received funding from the Sydney Catalyst Translational Cancer Research Centre and The University of Sydney Cancer Strategic Priority Area for Research Collaboration (SPARC) Implementation Scheme. AE Cust received Career Development Fellowships from the National Health and Medical Research Council of Australia (NHMRC; 1063593) and Cancer Institute NSW (15/CDF/1-14). AK Smit received a Research Training Program (RTP) Stipend Scholarship and Merit Top Up Scholarship from the University of Sydney, and a Top Up Scholar Award from the Sydney Catalyst Translational Cancer Research Centre. MG Kimlin has supported through a Professorial Chair funding from Cancer Council Queensland.
Publisher Copyright:
© 2018 The American Society of Photobiology
PY - 2018/7/1
Y1 - 2018/7/1
N2 - Self-reported sun exposure is commonly measured using questionnaires or diaries, but there are limited data on their validity, particularly for population subgroups. This research aimed to compare self-reported sun exposure, measured as (1) habitual time outdoors over the past month on weekends and weekdays and (2) a 4-day diary measure, against objective measurement of personal ultraviolet radiation using polysulfone film dosimeters. From November 2015 to January 2016, 94 people (22–69 years and living in New South Wales, Australia) completed a questionnaire, 4-day diary and 4-day dosimeter measures of overall, weekday and weekend sun exposure. Spearman correlations and Bland–Altman plots were used to measure agreement. The overall weekly correlation was 0.57 (95% confidence interval [CI] 0.44, 0.68) between standard erythemal doses (SEDs) measured by dosimeter and time spent outdoors measured by questionnaire, 0.74 (95% CI 0.66–0.81) between dosimeter and diary, and 0.59 (95% CI 0.48–0.68) between questionnaire and diary measures. Validity was lower for younger people and weekend sun exposure. There was strong correlation between dosimeter and sun diary measures and moderate correlation between dosimeter and questionnaire measures. Daily measurement over a longer period may be required to accurately capture weeklong sun exposure in all population subgroups.
AB - Self-reported sun exposure is commonly measured using questionnaires or diaries, but there are limited data on their validity, particularly for population subgroups. This research aimed to compare self-reported sun exposure, measured as (1) habitual time outdoors over the past month on weekends and weekdays and (2) a 4-day diary measure, against objective measurement of personal ultraviolet radiation using polysulfone film dosimeters. From November 2015 to January 2016, 94 people (22–69 years and living in New South Wales, Australia) completed a questionnaire, 4-day diary and 4-day dosimeter measures of overall, weekday and weekend sun exposure. Spearman correlations and Bland–Altman plots were used to measure agreement. The overall weekly correlation was 0.57 (95% confidence interval [CI] 0.44, 0.68) between standard erythemal doses (SEDs) measured by dosimeter and time spent outdoors measured by questionnaire, 0.74 (95% CI 0.66–0.81) between dosimeter and diary, and 0.59 (95% CI 0.48–0.68) between questionnaire and diary measures. Validity was lower for younger people and weekend sun exposure. There was strong correlation between dosimeter and sun diary measures and moderate correlation between dosimeter and questionnaire measures. Daily measurement over a longer period may be required to accurately capture weeklong sun exposure in all population subgroups.
UR - http://www.scopus.com/inward/record.url?scp=85044291829&partnerID=8YFLogxK
U2 - 10.1111/php.12893
DO - 10.1111/php.12893
M3 - Article
C2 - 29421857
AN - SCOPUS:85044291829
SN - 0031-8655
VL - 94
SP - 815
EP - 820
JO - Photochemistry and Photobiology
JF - Photochemistry and Photobiology
IS - 4
ER -