Although teletherapy can seem impersonal it does have a number of advantages. It is cheaper and is more suitable for people who find it hard to get into hospital, either for psychological or geographical reasons. Stephane Guay, from the University of Montreal, studied people with PTSD (post-traumatic stress disorder) who had either between 16 and 25 sessions with a therapist via a teleconference, or face-to-face therapy. Both groups saw a significant decrease in their post-traumatic stress, depression and anxiety symptoms and 75-80% overcame their PTSD; there was no difference in effectiveness between the two groups. However, the telemedicine participants were still treated in hospital as their treatment involved exposure to stress and it was felt to be important that someone was with them in case they reacted badly to it.