Differences of case-mix according to the type of hospital: methodological aspects and results.

: This study has brought to the fore variations of case-mix according to the type of French hospitals taken into consideration. The GHM line-up in the French classification of the hospital stays (French DRG) have also been studied and variations linked to the type of hospitals have been noticed too. This survey has been carried out thanks to the anonymous discharge summary issued by the national and the regional databases.