| http://www.w3.org/ns/prov#value | - A sample survey conducted among 600 school children and 600 parents in 1991, suggests that tobacco is the most common drug of abuse among parents (42% daily), followed by alcohol (9.5% daily), traditional brews (5.5% daily), cannabis (or dagga, 3% daily) and synthetic narcotic analgesics (3% daily).
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