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Prevalence of sun exposure and its associated factors in southern Brazil: a population-based study.

Duquia RP, Menezes AM, Almeida HL, Reichert FF, Santos Ida S, Haack RL, Horta BL - An Bras Dermatol (2013 Jul-Aug)

Bottom Line: The time period investigated ranged from December 2004 to March 2005, comprising 120 days of the highest ultraviolet index in the urban area of the city of Pelotas, in southern Brazil.The prevalence at work was 39.8% (95% CI, 37.2 - 42.4) among men and 10.5% (95% CI, 9.1 - 12.0) among women.Self-reported skin color was not associated.

View Article: PubMed Central - PubMed

Affiliation: Federal University of Health Sciences of Porto Alegre, Porto AlegreRS, Brazil.

ABSTRACT

Background: Sunlight exposure is responsible for a large number of dermatological diseases.

Objective: We estimated the prevalence of sunlight exposure and its associated factors in adults from southern Brazil in a cross-sectional, population-based study.

Methods: We investigated a representative sample of individuals aged ≥ 20 years (n=3,136). Sunlight exposure and its associated factors were evaluated in two distinct situations: at leisure time and at work. The time period investigated ranged from December 2004 to March 2005, comprising 120 days of the highest ultraviolet index in the urban area of the city of Pelotas, in southern Brazil. The participants were asked about sunlight exposure for at least 20 minutes between 10 A.M. and 4 P.M. The analysis was stratified by sex, and sunlight exposure was grouped into five categories.

Results: Among the 3,136 participants, prevalence of sunlight exposure at the beach was 32.8% (95% CI, 30.3 - 35.2) and 26.3% (95% CI, 24.2 28.3) among men and women, respectively. The prevalence at work was 39.8% (95% CI, 37.2 - 42.4) among men and 10.5% (95% CI, 9.1 - 12.0) among women. Age was inversely associated with sunlight exposure. Family income and achieved schooling were positively associated with sunlight exposure at leisure time and inversely associated with sunglight exposure at work. Self-reported skin color was not associated. Knowledge of any friend or relative who has been affected by skin cancer was positively associated with sunlight exposure among men at work.

Conclusion: Despite the media campaigns on the harmful effects of excessive sunlight exposure, we found a high prevalence of sunlight exposure during a period of high ultraviolet index.

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Related in: MedlinePlus

Sample distribution according to each studied situation
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f01: Sample distribution according to each studied situation

Mentions: From a total of 3,353 eligible adults, 93.5% were interviewed (Figure 1). Among the 3,136 adults interviewed, prevalence ofsunlight exposure at the beach for at least 20 minutes on at least one day between 10A.M. and 4 P.M in the observed period was 32.8% (95% CI, 30.3-35.2) and 26.3% (95% CI,24.2-28.3) among men and women, respectively. The prevalence of sunlight exposure atwork was 39.8% (95% CI, 37.242.4) among men and 10.5% (95% CI, 9.1-12.0) among women(Figure 1). Considering only those exposed tosunlight for at least one day in the studied period, the median number of days ofsunlight exposure at leisure time was 10 among men and 7 among women. At work, thisvalue was 80 for men and 50 for women. Sunlight exposure intra-class correlationcoefficient at the beach and at work was 0.05. The corresponding design effects atleisure time and at work were 2.2 and 2.4, respectively.


Prevalence of sun exposure and its associated factors in southern Brazil: a population-based study.

Duquia RP, Menezes AM, Almeida HL, Reichert FF, Santos Ida S, Haack RL, Horta BL - An Bras Dermatol (2013 Jul-Aug)

Sample distribution according to each studied situation
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3760930&req=5

f01: Sample distribution according to each studied situation
Mentions: From a total of 3,353 eligible adults, 93.5% were interviewed (Figure 1). Among the 3,136 adults interviewed, prevalence ofsunlight exposure at the beach for at least 20 minutes on at least one day between 10A.M. and 4 P.M in the observed period was 32.8% (95% CI, 30.3-35.2) and 26.3% (95% CI,24.2-28.3) among men and women, respectively. The prevalence of sunlight exposure atwork was 39.8% (95% CI, 37.242.4) among men and 10.5% (95% CI, 9.1-12.0) among women(Figure 1). Considering only those exposed tosunlight for at least one day in the studied period, the median number of days ofsunlight exposure at leisure time was 10 among men and 7 among women. At work, thisvalue was 80 for men and 50 for women. Sunlight exposure intra-class correlationcoefficient at the beach and at work was 0.05. The corresponding design effects atleisure time and at work were 2.2 and 2.4, respectively.

Bottom Line: The time period investigated ranged from December 2004 to March 2005, comprising 120 days of the highest ultraviolet index in the urban area of the city of Pelotas, in southern Brazil.The prevalence at work was 39.8% (95% CI, 37.2 - 42.4) among men and 10.5% (95% CI, 9.1 - 12.0) among women.Self-reported skin color was not associated.

View Article: PubMed Central - PubMed

Affiliation: Federal University of Health Sciences of Porto Alegre, Porto AlegreRS, Brazil.

ABSTRACT

Background: Sunlight exposure is responsible for a large number of dermatological diseases.

Objective: We estimated the prevalence of sunlight exposure and its associated factors in adults from southern Brazil in a cross-sectional, population-based study.

Methods: We investigated a representative sample of individuals aged ≥ 20 years (n=3,136). Sunlight exposure and its associated factors were evaluated in two distinct situations: at leisure time and at work. The time period investigated ranged from December 2004 to March 2005, comprising 120 days of the highest ultraviolet index in the urban area of the city of Pelotas, in southern Brazil. The participants were asked about sunlight exposure for at least 20 minutes between 10 A.M. and 4 P.M. The analysis was stratified by sex, and sunlight exposure was grouped into five categories.

Results: Among the 3,136 participants, prevalence of sunlight exposure at the beach was 32.8% (95% CI, 30.3 - 35.2) and 26.3% (95% CI, 24.2 28.3) among men and women, respectively. The prevalence at work was 39.8% (95% CI, 37.2 - 42.4) among men and 10.5% (95% CI, 9.1 - 12.0) among women. Age was inversely associated with sunlight exposure. Family income and achieved schooling were positively associated with sunlight exposure at leisure time and inversely associated with sunglight exposure at work. Self-reported skin color was not associated. Knowledge of any friend or relative who has been affected by skin cancer was positively associated with sunlight exposure among men at work.

Conclusion: Despite the media campaigns on the harmful effects of excessive sunlight exposure, we found a high prevalence of sunlight exposure during a period of high ultraviolet index.

Show MeSH
Related in: MedlinePlus