administration contrôle costeffectiveness coût-efficacité economics efficiency hospitaladministration hospitalcare hospitals hôpitaux just-in-timesystems mesures methods organization organizational organizationalefficiency patients patientsafety politicalscience publicpolicy qualitycontrol qualityimprovement qualité qualitétotale safetymeasures socialsecurity socialservices soinshospitaliers sécurité totalqualitymanagement welfare