Prevalence of Autism Spectrum Disorders in a Total Population Sample

From the Child Study Center, Yale University School of Medicine; the Nathan Kline Institute for Psychiatric Research, Orangeburg, N.Y.; the Korea Institute for Children's Social Development and the Rudolph Child Research Center, Seoul, South Korea; the Department of Psychiatry, Yonsei University College of Medicine, Seoul; the Department of Psychiatry, New York University School of Medicine, New York; the Department of Child and Adolescent Psychiatry, NYU Child Study Center, New York; the Department of Psychiatry, McGill University School of Medicine, Montreal; the Department of Psychiatry, University of Florida College of Medicine, Gainesville; the Department of Psychiatry, National Health Insurance Corporation Ilsan Hospital, Goyang, South Korea; and the Department of Anthropology, George Washington University, Washington, D.C.

From the Child Study Center, Yale University School of Medicine; the Nathan Kline Institute for Psychiatric Research, Orangeburg, N.Y.; the Korea Institute for Children's Social Development and the Rudolph Child Research Center, Seoul, South Korea; the Department of Psychiatry, Yonsei University College of Medicine, Seoul; the Department of Psychiatry, New York University School of Medicine, New York; the Department of Child and Adolescent Psychiatry, NYU Child Study Center, New York; the Department of Psychiatry, McGill University School of Medicine, Montreal; the Department of Psychiatry, University of Florida College of Medicine, Gainesville; the Department of Psychiatry, National Health Insurance Corporation Ilsan Hospital, Goyang, South Korea; and the Department of Anthropology, George Washington University, Washington, D.C.

From the Child Study Center, Yale University School of Medicine; the Nathan Kline Institute for Psychiatric Research, Orangeburg, N.Y.; the Korea Institute for Children's Social Development and the Rudolph Child Research Center, Seoul, South Korea; the Department of Psychiatry, Yonsei University College of Medicine, Seoul; the Department of Psychiatry, New York University School of Medicine, New York; the Department of Child and Adolescent Psychiatry, NYU Child Study Center, New York; the Department of Psychiatry, McGill University School of Medicine, Montreal; the Department of Psychiatry, University of Florida College of Medicine, Gainesville; the Department of Psychiatry, National Health Insurance Corporation Ilsan Hospital, Goyang, South Korea; and the Department of Anthropology, George Washington University, Washington, D.C.

From the Child Study Center, Yale University School of Medicine; the Nathan Kline Institute for Psychiatric Research, Orangeburg, N.Y.; the Korea Institute for Children's Social Development and the Rudolph Child Research Center, Seoul, South Korea; the Department of Psychiatry, Yonsei University College of Medicine, Seoul; the Department of Psychiatry, New York University School of Medicine, New York; the Department of Child and Adolescent Psychiatry, NYU Child Study Center, New York; the Department of Psychiatry, McGill University School of Medicine, Montreal; the Department of Psychiatry, University of Florida College of Medicine, Gainesville; the Department of Psychiatry, National Health Insurance Corporation Ilsan Hospital, Goyang, South Korea; and the Department of Anthropology, George Washington University, Washington, D.C.

From the Child Study Center, Yale University School of Medicine; the Nathan Kline Institute for Psychiatric Research, Orangeburg, N.Y.; the Korea Institute for Children's Social Development and the Rudolph Child Research Center, Seoul, South Korea; the Department of Psychiatry, Yonsei University College of Medicine, Seoul; the Department of Psychiatry, New York University School of Medicine, New York; the Department of Child and Adolescent Psychiatry, NYU Child Study Center, New York; the Department of Psychiatry, McGill University School of Medicine, Montreal; the Department of Psychiatry, University of Florida College of Medicine, Gainesville; the Department of Psychiatry, National Health Insurance Corporation Ilsan Hospital, Goyang, South Korea; and the Department of Anthropology, George Washington University, Washington, D.C.

From the Child Study Center, Yale University School of Medicine; the Nathan Kline Institute for Psychiatric Research, Orangeburg, N.Y.; the Korea Institute for Children's Social Development and the Rudolph Child Research Center, Seoul, South Korea; the Department of Psychiatry, Yonsei University College of Medicine, Seoul; the Department of Psychiatry, New York University School of Medicine, New York; the Department of Child and Adolescent Psychiatry, NYU Child Study Center, New York; the Department of Psychiatry, McGill University School of Medicine, Montreal; the Department of Psychiatry, University of Florida College of Medicine, Gainesville; the Department of Psychiatry, National Health Insurance Corporation Ilsan Hospital, Goyang, South Korea; and the Department of Anthropology, George Washington University, Washington, D.C.

From the Child Study Center, Yale University School of Medicine; the Nathan Kline Institute for Psychiatric Research, Orangeburg, N.Y.; the Korea Institute for Children's Social Development and the Rudolph Child Research Center, Seoul, South Korea; the Department of Psychiatry, Yonsei University College of Medicine, Seoul; the Department of Psychiatry, New York University School of Medicine, New York; the Department of Child and Adolescent Psychiatry, NYU Child Study Center, New York; the Department of Psychiatry, McGill University School of Medicine, Montreal; the Department of Psychiatry, University of Florida College of Medicine, Gainesville; the Department of Psychiatry, National Health Insurance Corporation Ilsan Hospital, Goyang, South Korea; and the Department of Anthropology, George Washington University, Washington, D.C.

From the Child Study Center, Yale University School of Medicine; the Nathan Kline Institute for Psychiatric Research, Orangeburg, N.Y.; the Korea Institute for Children's Social Development and the Rudolph Child Research Center, Seoul, South Korea; the Department of Psychiatry, Yonsei University College of Medicine, Seoul; the Department of Psychiatry, New York University School of Medicine, New York; the Department of Child and Adolescent Psychiatry, NYU Child Study Center, New York; the Department of Psychiatry, McGill University School of Medicine, Montreal; the Department of Psychiatry, University of Florida College of Medicine, Gainesville; the Department of Psychiatry, National Health Insurance Corporation Ilsan Hospital, Goyang, South Korea; and the Department of Anthropology, George Washington University, Washington, D.C.

From the Child Study Center, Yale University School of Medicine; the Nathan Kline Institute for Psychiatric Research, Orangeburg, N.Y.; the Korea Institute for Children's Social Development and the Rudolph Child Research Center, Seoul, South Korea; the Department of Psychiatry, Yonsei University College of Medicine, Seoul; the Department of Psychiatry, New York University School of Medicine, New York; the Department of Child and Adolescent Psychiatry, NYU Child Study Center, New York; the Department of Psychiatry, McGill University School of Medicine, Montreal; the Department of Psychiatry, University of Florida College of Medicine, Gainesville; the Department of Psychiatry, National Health Insurance Corporation Ilsan Hospital, Goyang, South Korea; and the Department of Anthropology, George Washington University, Washington, D.C.

From the Child Study Center, Yale University School of Medicine; the Nathan Kline Institute for Psychiatric Research, Orangeburg, N.Y.; the Korea Institute for Children's Social Development and the Rudolph Child Research Center, Seoul, South Korea; the Department of Psychiatry, Yonsei University College of Medicine, Seoul; the Department of Psychiatry, New York University School of Medicine, New York; the Department of Child and Adolescent Psychiatry, NYU Child Study Center, New York; the Department of Psychiatry, McGill University School of Medicine, Montreal; the Department of Psychiatry, University of Florida College of Medicine, Gainesville; the Department of Psychiatry, National Health Insurance Corporation Ilsan Hospital, Goyang, South Korea; and the Department of Anthropology, George Washington University, Washington, D.C.

From the Child Study Center, Yale University School of Medicine; the Nathan Kline Institute for Psychiatric Research, Orangeburg, N.Y.; the Korea Institute for Children's Social Development and the Rudolph Child Research Center, Seoul, South Korea; the Department of Psychiatry, Yonsei University College of Medicine, Seoul; the Department of Psychiatry, New York University School of Medicine, New York; the Department of Child and Adolescent Psychiatry, NYU Child Study Center, New York; the Department of Psychiatry, McGill University School of Medicine, Montreal; the Department of Psychiatry, University of Florida College of Medicine, Gainesville; the Department of Psychiatry, National Health Insurance Corporation Ilsan Hospital, Goyang, South Korea; and the Department of Anthropology, George Washington University, Washington, D.C.