Table 3.

Median (IQR) number of records per operation and per hospital stay.

OMOPa table	Median (IQR) number of records per operation (AIMSb)	Median (IQR) number of records per hospital stay (PMSIc)
VISIT_DETAIL	1 (1-1)	1 (1-1)
CONDITION_OCCURRENCE	1 (1-1)	2 (2-5)
DRUG_EXPOSURE	10 (5-17)	—d
PROCEDURE_OCCURRENCE	9 (4-12)	2 (1-4)
OBSERVATION	10 (8-10)	—
NOTE	31 (12-40)	—
PERIOD	7 (5-10)	—
FEATURE	71 (42-84)	—

^aOMOP: Observational Medical Outcomes Partnership.

^bAIMS: anesthesia information management system.

^cPMSI: Programme de Médicalisation des Systèmes d’Information.

^dNot available.