[Analysis of the quality of the information on the erectile dysfunction in YouTube.]

The objective of our study is to stablish the scientific quality of the available information in YouTube about erectile dysfunction (ED).

We searched on YouTube thrree terms ("Problemas de Erección" (PE), "Impotencia"(I) y "Disfunción Eréctil" (DE)). The sixteen first videos from each term were selected for the analysis. Two independent urologists reviewed all videos and classified all of them in scientific evidence-based (SEB) or not scientific evidence-based (NSEB) according to the current literature. In the subgroup analysis we compare: number of visits, duration, time of publication, source and type of information.

After excluding the repeated links and non-concordant videos between both urologists, we analysed 147 videos. The Kappa statistic was 0.89 (95% CI0.85-0.96). 37% were considered SEB and 63% were considered NSEB. The median of reproductions in the SEB group was 24.356 (96-126.410) and 44.416 for NSEB (190-10.318.642); this difference was statistically significant. The median duration was 254 seconds(46-984) for the SEB group and 228 seconds for the NSEB (23-2.880); the median time of publication was 42 (16-103) months for the SEB group and 29 (11-134) months for the other one. 83% of SEB videos were published in health networks and television programs,while 58% of NSEB were published in user blogs. The SEB videos show more information about pathophysiology,aetiology, endothelial dysfunction, diagnosis and treatment than NSEB (p<0.001).

37% of the videos were consideredSEB. The NSEB videos were significantly more playedthan SEB group.