TUELLS, José et al. Characteristics of the Videos in Spanish Posted on Youtube about Human Papillomavirus Vaccines. []. , 89, 1, pp.107-115. ISSN 2173-9110.  https://dx.doi.org/10.4321/S1135-57272015000100012.

Background: Internet is a resource to search for health-related information. The aim of this work was to know the content of the videos in Spanish language of YouTube related to the vaccine against the human papilloma virus (HPV). Methods: An observational study was conducted from a search on YouTube on 26th July 2013 by using keywords such as: "human papilloma virus vaccine", "HPV vaccine", "Gardasil vaccine", "Cervarix vaccine". Different categories were established according to: the type of vaccine, the published source and the favorable or unfavorable predisposition towards the human papillomavirus vaccination. The number of visits and the duration of the videos were gathered, with analysis of variables in the 20 most visited videos. Results: A total of 170 videos were classified like: local news (n=39; 37 favorable, 2 unfavorable; 2:06:29; 42972 visits), national news (n=32; 30/2; 1:49:27; 50138 visits), created by YouTube subscribers (n=21; 21/1; 1:44:39; 10991 visits), advertisements (n=21; 19/2; 0:27:05; 28435 visits), conferences (n=17; 15/2; 3:25:39; 27206 visits), documentaries (n=16; 12/4; 2:11:31; 30629 visits). From all of the 20 most viewed YouTube videos predominated those which were favorable to the vaccination (n=12; 0:43:43; 161789 visits) against the unfavorable (n=8; 2:44:14; 86583 visits). Conclusions: Most of the videos have a favorable opinion towards HPV vaccine, although videos with a negative content were the longest and most viewed.

: Human papillomavirus; Papillomavirus vaccines; YouTube; Internet.

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