Comparisons of Depressive Symptoms of the Hamilton Depression Rating Scale between Elderly and Non-Elderly Outpatients with Major Depressive Disorder

Ikki Yoo, MD, Jung-Yoon Heo, MD, Ki Won Kim, MD, Ji Hyun Baek, MD, Hye Jin Yoo, MD, Dong Jun Kim, BA, and Hong Jin Jeon, MD, PhD 1 Department of Psychiatry, Depression Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea 2 Department of Health Sciences & Technology, Department of Clinical Research Design and Evaluation, and Department of Medical Device Management and Research, Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Seoul, Korea 3 Depression Clinical and Research Program, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA