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Chart-Abstracted Sample Size Requirements OP-18

The Joint Commission

Chart-Abstracted Sample Size Requirements OP-18

Owned by Kelly C
Last updated: Jul 03, 2024
Encounter dates beginning 01-01-23 (1Q23) and moving forward until updated

OP-18: Median Time from ED Arrival to ED Departure for Discharged ED Patients

Quarterly Sampling

OP-18 has the option of “Sampling” or “Not Sampling”. If a hospital selects “Sampling”, then the sum of the Hospital Sample Size from all three months of the quarter must meet the minimal requirement as defined in the following table. There is no “Monthly” sampling for OP-18.

Quarterly Sample Size (OP-18)

If Average Quarterly Initial Patient Population Size “N” equals:

Quarterly Sample Size (OP-18)

If Average Quarterly Initial Patient Population Size “N” equals:

≥901 then minimum Required Sample Size “n” =96

63–900 then minimum Required Sample Size “n” = 63

≤ 62 then Use all cases

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