Page Comparison

Name:

Denominator

Aggregated For:

Proportion and ratio measures

Definition:

Summation of denominator cases (proportion) or the denominator component (ratio) for the measure's population during the month.

The Denominator is the count of each patient-level record with a measure category assignment of ‘D’ or ‘E’ (i.e., [count of ‘D’ + count of ‘E’] = Denominator).

Aggregate all case-level records that are members of a measure's population. Do not eliminate or suppress outliers.

Note:

• HBIPS-2 and 3:  The Denominator for these measures is not derived from the processing of patient-level data through the measure algorithm. Instead, it is calculated using the Census Days for the hospital or unit.

Denominator = (Psychiatric Inpatient Days - Leave Days), submitted as Hours

Allowable Values:

0 through 10,000,000 (whole numbers only)

Note:  Hospitals entering a zero for this data element will be required to attest that they have no cases in the denominator (i.e., ‘zero denominator’) for the measure for the month. Hospitals with denominator cases are expected to enter the appropriate value for each measure or strata.

Edits:

• If Initial Population = zero, then Denominator may not be entered.

• Denominator must be <= Hospital Sample Size (for all measures except HBIPS-2 and 3)

• The Overall strata’s Denominator = the sum (Denominator of the four age strata).

• HBIPS-2 and 3:  Denominator must be = Hospital Sample Size * 24 (for HBIPS-2 and 3 Hospital Sample Size is in days, while Denominator must be submitted in hours)

HBIPS-2 and 3 Strata

Incorrect Overall Calculation

Correct Overall Calculation

B

1.3454

Rounded (1.3454) = 1.345

C

2.0044

Rounded (2.0044) = 2.004

D

3.2544

Rounded (3.2544) = 3.254

E

0.0014

Rounded (0.0014) = 0.001

Overall

Sum strata (1.3454 + 2.0044+ 3.2544 + 0.0014) =

Round overall (6.6056) = 6.606

Sum rounded strata (1.345 + 2.004+ 3.254 + 0.001) =

overall 6.604