The newly introduced WHO Drug Use Indicators enable the delineation of
drug use patterns, identification of inappropriate use and evaluation
of interventional strategies. This study highlights the drug use patt
ern in a city hospital and further identifies areas of inappropriate u
se that need to be addressed. Records of 614 patient encounters (Janua
ry-December 1993) were obtained by systematic random sampling at the C
entral Hospital, Benin City. The WHO prescribing indicators were calcu
lated and detailed review in various therapeutic categories was carrie
d out. The average number of drugs per encounter was 3.7. The percenta
ge of encounters with injection and antibiotics were 37.0% and 54.2% r
espectively. Forty-eight per cent of drugs were prescribed by generic
name and 94.4% of all prescribed products were in the National Essenti
al Drug List. Drugs were not prescribed in 2.8% of encounters. Of inje
ctions, 74.1% were for treatment of febrile illness, usually presumed
to be malaria. Analgesics/antipyretics, mainly paracetamol, were presc
ribed in 72.3% of encounters. In 57.8% of encounters vitamin preparati
ons were prescribed. Certain differences were observed between childre
n and adults with children receiving more vitamins and antimalarials.
These findings suggest some inappropriate use of drugs which may in tu
rn reflect current practice throughout Nigeria. Proper case management
of febrile illness is likely to promote more rational use of drugs. (
C) 1997 John Wiley & Sons, Ltd.