| Titre : | Do larger people have more naevi ? Naevus frequency versus naevus density. (2000) |
| Auteurs : | S.D. WALTER ; R. ASHBOLT ; T. DWYER ; L.D. MARRETT ; Menzies Centre for Population Health Research. University of Tasmania. Hobart Tasmania. AUS |
| Type de document : | Article |
| Dans : | International journal of epidemiology (vol. 29, n° 6, 2000) |
| Pagination : | 1025-1030 |
| Langues: | Anglais |
| Mots-clés : | Peau ; Adolescent ; Homme ; Epidémiologie ; Facteur risque ; Anthropométrie ; Densité population ; Taille corporelle ; Cancer |
| Résumé : | [BDSP. Notice produite par INIST 6jR0x2xK. Diffusion soumise à autorisation]. Background It is unclear which of the number or the density of naevi on the skin is the more appropriate measure of risk of melanoma. Furthermore, the relationship between the number of naevi and their density in an individual has not been explored. Thus, for example, it is unknown if larger people tend to have more naevi by virtue of having a larger skin area, or if the density of naevi is similar in people of different body sizes. In this study, we explored the relationship between the number and the density of naevi in a sample of adolescents. Subjects and A sample survey of naevi in 472 grade 9 secondary school students (aged 14-15 Methods years) was conducted in Tasmania, Australia during 1992, and a subset of these individuals was followed up in 1997. Counts of naevi of various sizes were taken on the arm, leg, and back. Naevus density was estimated by using an algorithm to estimate body surface area from the height and weight of an individual. More general relationships of the naevus counts to height and weight were also explored. Finally, we considered whether the relationship between naevus density and the anthropometric variables could be confounded by exposure to ultraviolet radiation. Results The mean number of naevi was very similar in the two samples. Naevus density was slightly lower in the 1997 sample, mainly because of increasing body size in the cohort. (...) |
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