Index of occupation.-Number of stays x 100 / number of beds x 365.

Average stay.-Number of stays / number of discharges.

rotation index.-Number of admissions / number of camas.

Gross mortality index.-Discharges by death x 100 / number of discharges.

index of necropsies.-Necropsies x 1,000 / number of deaths.

Emergency strain.-Urgent admission x 1 00 / Total admissions.

Emergencies leading to admission.-Urgent admission x 100 /Total emergencies.

Caesarean index.-Number of caesarean operations x 100 / number of births.