The Clinical Trial

IT IS with mixed feelings that I stand, a layman, before the medical faculty of one of the world's most famous universities. In the past century, or more, statisticians have, it is true, been recognized as having a right of entry to the field of public health, and to its related sciences of epidemiology and preventive medicine. They have been closely associated with medical officers of health. They have worked with all who have been concerned with the promotion and maintenance of the well-being of the community. But it is clear that the health of the community — the group . . .