Validity of beachgoers' self-report of their sun habits

O'Riordan, David L., Lunde, Kevin B., Steffen, Alana D. and Maddock, Jason E. (2006) Validity of beachgoers' self-report of their sun habits. Archives of Dermatology, 142 10: 1304-1311. doi:10.1001/archderm.142.10.1304

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Author O'Riordan, David L.
Lunde, Kevin B.
Steffen, Alana D.
Maddock, Jason E.
Title Validity of beachgoers' self-report of their sun habits
Journal name Archives of Dermatology   Check publisher's open access policy
ISSN 0003-987X
Publication date 2006-10
Sub-type Article (original research)
DOI 10.1001/archderm.142.10.1304
Open Access Status File (Publisher version)
Volume 142
Issue 10
Start page 1304
End page 1311
Total pages 8
Place of publication Chicago, IL, United States
Publisher American Medical Association
Language eng
Subject 321002 Dermatology
Formatted abstract
Objective: To examine the validity of beachgoers' self-reported sun protection and UV exposure using objective measures.

Eighty-eight participants completed a brief survey when they arrived at the beach; their skin was swabbed for the presence of sunscreen, while an observer recorded their clothing worn to the beach and the presence of sunburn. On leaving the beach, an exit survey detailing activities and sun habits while on the beach was completed by the participants, follow-up sunscreen swabs were obtained, and sunburns were recorded. Clothing observations were made for a subgroup (n=25) of participants during their beach stay.

Most participants (38 [44%]) reported spending 2 to 3 hours at the beach, which was consistent with researcher observations (Spearman rank correlation, r=0.75). Moderate to substantial agreement was achieved between reported use of sunscreen for the day and sunscreen swabs (κ, 0.54, 0.70, and 0.72 for the face, legs, and arms, respectively). Participants' self-report of clothing worn to the beach had substantial agreement with researcher observation: κ coefficients ranged from 0.63 for footwear to 0.77 for head wear. Agreement was variable for clothing worn while on the beach, with slight to fair agreement for sunglasses (κ, 0.11) and footwear (κ, 0.23) and substantial agreement for upper body clothing (κ, 0.79). Agreement between self-reported and observed sunburn was consistently lower (κ, 0.21, 0.33, and 0.39 for the face, legs, and arms, respectively), with participants reporting more sunburn on arrival than was observed.

Overall, self-report measures of time outside, sunscreen use, and clothing worn demonstrated good criterion validity when compared with observation and sunscreen swabbing. Sunscreen swabbing proved an effective procedure for detecting sunscreen at a beach setting.
Keyword Protective clothing
Skin neoplasms
Sunscreening agents
Ultraviolet rays
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ
Additional Notes "Study"

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Public Health Publications
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Created: Tue, 08 Jan 2008, 16:18:25 EST by Laura McTaggart on behalf of School of Public Health