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Observed to Expected Ratios are used to compared the actual occurrences of an event to the predicted occurrences of the event.  In pellucid, OE ratios are calculated for the value field, and the numerator becomes the Observed count, while the denominator becomes the Expected count.  Mathematically, an OE ratio greater than 1 indicates that more instances took place than were predicted, while an OE ratio of less than one indicates that less incidents took place compared to what was expected.

These measures
are
may be compared to state or national averages, which is then used to populate sig_var_state or sig_var_nation
SQL to locate these measures: 
.

All Observed to Expected Ratio Measures

select a.measure_id, a.author_measure_id, a.name_friendly
from measures
where author_measure_id like 'oe%'
as a, measure_groups_measures as b
where a.measure_id = b.measure_id 
and b.measure_group_id = 25
.
measure_idauthor_measure_idname_friendly
12196
OE:
PQI 02Observed to Expected Ratio: Perforated Appendix
12197
OE:
PQI 07Observed to Expected Ratio: Hypertension Admissions
12198
OE:
PQI 14Observed to Expected Ratio: Uncontrolled Diabetes Admissions
12199
OE:
PQI 15Observed to Expected Ratio: Adult Asthma Admissions
12200
OE:
PQI 10Observed to Expected Ratio: Dehydration Admissions
12201
OE:
PQI 11Observed to Expected Ratio: Bacterial Pneumonia Admissions
12202
OE:
PQI 12Observed to Expected Ratio: Urinary Tract Infection Admissions
12203
OE:
PQI 13Observed to Expected Ratio: Angina Admissions
12204
OE:
PQI 16Observed to Expected Ratio: Lower Extremity Amputations
12205
OE:
PQI 01Observed to Expected Ratio: Diabetes Short-term Complications Admissions
12206
OE:
PQI 08Observed to Expected Ratio: Congestive Heart Failure Admissions
12207
OE:
PQI 03Observed to Expected Ratio: Diabetes Long-term Complications Admissions
12208
OE:
PQI 05Observed to Expected Ratio: Chronic Obstructive Pulmonary Disease Admissions
16761
OE:
IQI 08Observed to Expected Ratio: Esophageal Resection Mortality Rate
16762
OE:
IQI 09Observed to Expected Ratio: Pancreatic Resection Mortality Rate
16763
OE:
IQI 09aObserved to Expected Ratio: Pancreatic Resection Mortality Rate Stratum A
16764
OE:
IQI 09bObserved to Expected Ratio: Resection Mortality Rate Stratum B
16765
OE:
IQI 11Observed to Expected Ratio: Abdominal Aortic Aneurysm (AAA) Repair Mortality Rate
16766
OE:
IQI 11aObserved to Expected Ratio: Abdominal Aortic Aneurysm (AAA) Repair Mortality Rate Stratum A
16767
OE:
IQI 11bObserved to Expected Ratio: Abdominal Aortic Aneurysm (AAA) Repair Mortality Rate Stratum B
16768
OE:
IQI 11cObserved to Expected Ratio: Abdominal Aortic Aneurysm (AAA) Repair Mortality Rate Stratum C
16769
OE:
IQI 11dObserved to Expected Ratio: Abdominal Aortic Aneurysm (AAA) Repair Mortality Rate Stratum D
16770
OE:
IQI 12Observed to Expected Ratio: Coronary Artery Bypass Graft (CABG) Mortality Rate
16771
OE:
IQI 13Observed to Expected Ratio: Craniotomy Mortality Rate
16772
OE:
IQI 14Observed to Expected Ratio: Hip Replacement Mortality Rate
16773
OE:
IQI 15Acute Myocardial Infarction (AMI) Mortality Rate
16774
OE:
IQI 16Heart Failure Mortality Rate
16775
OE:
IQI 17Acute Stroke Mortality Rate
16776
OE:
IQI 17aObserved to Expected Ratio: Acute Stroke Mortality Rate Stratum A
16777
OE:
IQI 17bObserved to Expected Ratio: Acute Stroke Mortality Rate Stratum B
16778
OE:
IQI 17cObserved to Expected Ratio: Acute Stroke Mortality Rate Stratum C
16779
OE:
IQI 18Gastrointestinal Hemorrhage Mortality Rate
16780
OE:
IQI 19Hip Fracture Mortality Rate
16781
OE:
IQI 20Pneumonia Mortality Rate
16805
oeIQI
IQI 26Observed to Expected Coronary Artery Bypass Graft (CABG) Rate - Area Level
16806
oeIQI
IQI 27Observed to Expected Percutaneous Coronary Intervention (PCI) Rate - Area Level
16807
oeIQI
IQI 28Observed to Expected Hysterectomy Rate - Area Level
16808
oeIQI
IQI 29Observed to Expected Laminectomy or Spinal Fusion Rate - Area Level
16809
oeIQI
IQI 30Percutaneous Coronary Intervention (PCI) Mortality Rate
16810
oeIQI
IQI 31Carotid Endarterectomy Mortality Rate
16811
oeIQI
IQI 32Observed to Expected Acute Myocardial Infarction (AMI) Mortality Rate, Without Transfer Cases
16830
oePDI
PDI 01Observed to Expected Accidental Puncture and Laceration, Pediatric
16831
oePDI
PDI 02Observed to Expected Pressure Ulcer Rate
16832
oePDI
PDI 05Observed to Expected Iatrogenic Pneumothorax Rate
16833
oePDI
PDI 06Observed to Expected RACHS-1 Pediatric Heart Surgery Mortality Rate
16834
oePDI
PDI 08Observed to Expected Perioperative Hemorrhage or Hematoma Rate
16835
oePDI
PDI 09Observed to Expected Postoperative Respiratory Failure Rate
16836
oePDI
PDI 10Observed to Expected Postoperative Sepsis Rate
16837
oePDI
PDI 11Observed to Expected Postoperative Wound Dehiscence Rate
16838
oePDI
PDI 12Observed to Expected Central Venous Catheter-Related Blood Stream Infection Rate
16847
oePDI
PDI 14Observed to Expected Admission Rate (Area Level): Asthma
16848
oePDI
PDI 15Observed to Expected Admission Rate (Area Level): Diabetes Short-Term Complications Admission Rate
16849
oePDI
PDI 16Observed to Expected Admission Rate (Area Level): Gastroenteritis
16850
oePDI
PDI 17Observed to Expected Admission Rate (Area Level): Perforated Appendix
16851
oePDI
PDI 18Observed to Expected Admission Rate (Area Level): Urinary Tract Infection
16852
oePDI
PDI 90Observed to Expected Admission Rate (Area Level): Pediatric Quality Overall Composite
16853
oePDI
PDI 91Observed to Expected Admission Rate (Area Level): Pediatric Quality Acute Composite
16854
oePDI
PDI 92Observed to Expected Admission Rate (Area Level): Pediatric Quality Chronic Composite
16856
oePQI
PQI 05Observed to Expected COPD or Asthma in Older Adults
16857
oePQI
PQI 09Observed to Expected Low Birth Weight
16859
oePQI
PQI 15Observed to Expected Asthma in Younger Adults Admissions
16860
oePQI
PQI 90Observed to Expected Overall Preventive Care
16861
oePQI
PQI 91Observed to Expected Overall Acute Preventive Care
16862
oePQI
PQI 92Observed to Expected Overall Chronic Preventive Care
16864
oePSI
PSI 02Observed to Expected Unexpected Deaths
16865
oePSI
PSI 03Pressure Ulcer
16866
oePSI
PSI 04Observed to Expected Death Rate among Surgical Inpatients with Serious Treatable Complications
16869
oePSI
PSI 04aObserved to Expected Death Rate among Surgical Inpatients with Serious Treatable Complications Stratum A
16872
oePSI
PSI 04bObserved to Expected Death Rate among Surgical Inpatients with Serious Treatable Complications Stratum B
16875
oePSI
PSI 04cObserverd to Expected Death Rate among Surgical Inpatients with Serious Treatable Complications Stratum C
16878
oePSI
PSI 04dObserved to Expected Death Rate among Surgical Inpatients with Serious Treatable Complications Stratum D
16881
oePSI
PSI 04eObserved to Expected Death Rate among Surgical Inpatients with Serious Treatable Complications Stratum E
16883
oePSI
PSI 06Collapsed Lung caused by Medical Care
16884
oePSI
PSI 07Central Venous Catheter-related Bloodstream Infections
16885
oePSI
PSI 08Postoperative Hip Fracture
16887
oePSI
PSI 09Postoperative Hemorrhage or Hematoma
16889
oePSI
PSI 11Postoperative Respiratory Failure
16891
oePSI
PSI 10Postoperative Physiologic and Metabolic Derangement
16892
oePSI
PSI 12Postoperative Lung Embolism or Deep Vein Thrombosis (clotting)
16893
oePSI
PSI 13Postoperative Sepsis
16894
oePSI
PSI 14Wound Complications in Abdominal Wall Surgery
16895
oePSI
PSI 15Accidental Puncture and Laceration