The top electricity associated with data, compared to other past training from inside the Korea [6,seven,8,nine,11], would be the fact i utilized a multiple-stratification testing framework to get nationwide associate investigation, having greater age groups, targeting the intercourse. We think which our efficiency sufficiently echo latest habits out of Korean intimate routines, necessary for foods of principles and methods to incorporate top intimate fitness. Second, i recruited participants and you may obtained data on the web, to reduce recommendations bias. Face-to-face and you may cell interview might be the wrong having like a survey, as it might end up being awkward to own participants to fairly share sensitive and painful personal guidance . Více