1 iflip research paper 01 2 impact of financial sector liberalisation on competition and efficiency in the ghanaian banking industry kweku baa korsah ernest k nyarko noel a tagoe october 2001 copyright international labour organization isbn 92 112737 0 issn 1609 8382 kpmg ghana ayitey abstract this describes an application market concentration ratios data envelopment analysis dea to assess performance banks technique ascer tains incidence intensity measures relative multi input output scenario our empirical implementation analytical techniques shows that has increased have become more efficient although there is evidence stagnation both recent years further profitable due oligopolistic nature enables them reap supernormal profits these are important findings extent regulators rely structure formulate evaluate
