CHAPTER ONE: INTRODUCTION 1.1 BACKGROUND OF THE STUDY Africa with approximately one fifth of the world’s population is by far the continent with the least document in terms of data on substance abuse (Data for Africa, 2011).Nigeria the most populous country in Africa and the eight most populous in the world with an estimate population over 154 million, does not have current data on substance abuse treatment demand and treatment facilities. The drug treatment demand figures quoted...
