in a technical sense, concordance is the efficiency of compliance and adherence combined, and it represents the effectiveness (not yet efficiency) of clinical interventions
Nobody will keep swallowing those big pills for a long period, concordance is very poorly designed here.
An index-type referencebooklet dat tells you where key words and phrases are in da operator's manual for da infamous SST jet.
Perhaps if da crew of Air France Flight 4590 had consulted da Concordence shortly before takeoff, they might have seen da super-important directive, "Check da runway for foreign objects before beginning take-off maneuvers", and thus saved their plane from a fiery crash!
I don't drink, so I would never have any need to crack open (pun not intended, but it sure fits here, in dat people speak of "cracking open a cold one") a concoordence.