NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.

Davies SM, Geppert J, McClellan M, et al. Refinement of the HCUP Quality Indicators. Rockville (MD): Agency for Healthcare Research and Quality (US); 2001 May. (Technical Reviews, No. 4.)

APPENDIX 8Literature Tables for Utilization and ACSC Indicators

This appendix summarizes the literature reviews for area utilization and ACSC indicators in table format.

Table 1A. Studies of appropriateness of specific procedures. This table summarizes the studies used to identify area utilization indicators.

Tables 2A-6A. These tables summarize studies of ACSC indicators. Table 2A identifies the studies and designs. Table 3A lists the ACS conditions examined in each study. Tables 4A-6A list pediatric avoidable hospitalizations, infant discretionary hospitalizations, and late hospitalization indicators examined by each study.

Table 3A focuses on conditions for which the risk of hospitalization can be reduced, either through better outpatient management of chronic diseases (e.g., asthma, CHF, diabetes) or through more timely diagnosis and effective treatment of acute conditions (e.g., pneumonia, UTI, cellulitis). This is the best validated of the 4 constructs, and is the basis for all of our selected indicators.

Table 4A includes "conditions for which evidence exists that specific ambulatory care modalities reduce hospitalization rates." This category differs from #1 in that it is more sharply focused on defects in ambulatory care, such as a lack of prior outpatient visits or antibiotic prescriptions. There is some overlap between this list and #1 (e.g., asthma, gastroenteritis, DKA, severe ENT infections, PID), although the definitions often differ slightly. Some of these indicators cannot be implemented without linked outpatient claims.

Table 5A focuses on conditions "for which the decision to admit involves a substantial amount of physician judgment...have a wide range in severity and are often managed at home." This concept seems somewhat less relevant to discussions about quality of care.

Table 6A focuses on conditions "whose advanced stages are presumed to have a greater likelihood of reflecting untimely hospital admissions" (because earlier admission would have prevented progression to the advanced stage). This concept relates to the timeliness of hospitalization and the appropriateness of inpatient care, more than to the timeliness and effectiveness of outpatient care.

Table 1A. Studies of appropriateness of specific procedures

Procedure% inappropriate% uncertainSource of population # of patients evaluated
Carotid Endarterectomy 1 18% (51/281) overall; neurosurgery 14% vs. non-neurosurgery 21%; varied from 0% to 33% among surgeons (P = 0.07)49% (138/281) overall, decreased to 45% after adjusting for benefit of CEA for severe symptomatic disease found in NASCET; 40% neurosurgery vs. 55% non-neurosurgery; varied from 33% to 67% across surgeons (P=.26)All in Edmonton, Alberta, Canada291 cases of CEA performed on 265 patients between April 1994 and Sept 1995, from nine surgeons at four teaching hospitals (2 were tertiary-care centers); excluded patients without angiograms (10)
Carotid Endartectomy 24 *follow up to above study4% (8/184)47% (84/184)All in Edmonton, Alberta, Canada184 patients with CEA between 9/1/96 and 8/31/97 were evaluated after results of previous study, CEA guidelines and notification of possible surveillance were distributed to all surgeons performing CEA in Edmonton
Carotid Endarterectomy 2 Definition A (low risk of stroke/death):~55%
Definition B: ~5%
Definition C:~5%
Definition A (low risk of stroke/death): ~12%
Definition B: ~37%
Definition C:~14%
Twelve academic medical centers1160 randomly selected patients with CEA from 1988-1990 (with the exception of one hospital which included 1987 data), miscoded charts were excluded
Carotid Endarterectomy 3 32% overall; varied from 29% to 40% among sites32% overall; varied from 29% to 34% among sites5 sites of varying utilization for the 3 procedures selected from Medicare claims submitted by physicians in Arkansas, Colorado, Iowa, Mass., Montana, Penn., S. Carolina, and N. Calif.Random sample of Medicare beneficiaries for each procedure (claims submitted in 1981) at each site (high, average, and low use geographic areas)
Carotid Endarterectomy 4 Varied by county from 0% - 67%No discussion of equivocal indication23 adjacent rural and urban, large and small, counties in one large, populous stateSampled procedures by Medicare billing codes performed on 600 CEA patients in 1981, aged 65 years and older
Carotid Endarterectomy 22 3.9% characterized as inappropriate; study considered CEA inappropriate if the case was "uncertain" or "proven inappropriate".1993 Medicare admissions in Georgia w/procedure code for CEA1945 CEAs performed on Medicare recipients in GA in 1993
Cataract Surgery 5 2% (15/723) overall; varied from 0% to 6% by institution8% (359/723) overall; varied from 0% to 15% by institutionTen Academic Medical Centers1139 randomly selected until approx. 130 patients at each facility w/cataract surgery in 1990 were obtained; patients receiving other ocular surgery performed at the same time as cataract surgery or with specific ICD-9 CM or CPT-4 were excluded
Cholecystectomy 6 12% overall; varied from 6%-14% (p=.002) among hospitals17% overall; varied from 9%-24% (p=.002) among hospitalsFour Israeli hospitals belonging to the General Sick Fund (provides prepaid healthcare to 76% of Israeli population)816 patients identified as having undergone cholecystectomy in 1986; 702 records were located and evaluated; complete clinical info was obtained on 657 patients
Colonoscopy 7 27.8% (110/553) by ASGE criteria; 31.5% (170/553) by US 94 criteria; 25.6% (138/553) by Swiss 94 criteriaNo rating for ASGE;
10.9% (59/553) by US 94 criteria; 11.6% (63/553) by Swiss 94 criteria
Two university-based multi-specialty outpatient clinics in Lausanne and Basel, Switzerland553 consecutive patients referred by the outpatient clinics for colonoscopy, aged >15 from January 1995 to September 1995 (Lausanne) and January 1995 to July 1995 (Basel)
Coronary Angiography 26 7% (1/14) of blacks;
10% (4/41) whites who underwent angiography
50% (7/14) of blacks;
46.3% (19/41) whites who underwent angiography
Department of Veterans Affairs200 (100 white and 100 black) VA inpatients discharged between 1/193 and 12/1/93 with primary dx of cardiovascular disease or chest pain
Coronary Angiography 8 6% overall; no difference across subgroups16% overall; no difference across subgroupsHarvard Community Health Plan (HCHP), Brookline Mass; mixed model HMO292 HCHP enrollees with coronary angiography in 1992; stratified into four subgroups
Coronary Angiography 9 21% overall30% overallTrent region; coronary angiography is done in 3 referral centers and CABG in 2 centers.random sample of 320 patients with coronary angiography between 2/1/87 and 5/30/88. Exclusions: incomplete records, congenital heart disease, transplant, primary valve disease.
Coronary Angiography 3 17% overall; varied from 15%-18% among sites9% overall; varied from 4%-10% among sites5 sites of varying utilization for the 3 procedures selected from Medicare claims submitted by physicians in Arkansas, Colorado, Iowa, Mass., Montana, Penn., S. Carolina, and N. Calif.Random sample of Medicare beneficiaries for each procedure (claims submitted in 1981) at each site (high, average, and low use geographic areas)
Coronary Angiography 4 Varied by county from 8%-75%no discussion of equivocal indication23 adjacent rural and urban, large and small, counties in one large, populous stateSampled procedures by Medicare billing codes performed on 600 CA patients in 1981, aged 65 years and older
Coronary Angiography 10 Canadian Criteria
Canadian sample: 9.0% (95% CI, 6.6%-11.4%)
New York sample: 10.2% (95% CI, 8.5%-11.8%)
US Criteria
Canadian sample: 5.1% (95% CI, 3.2%-6.9%)
New York sample: 4.2% (95% CI, 3.4%-6.9%)
Canadian Criteria
Canadian sample: 33.2% (95% CI, 29.2%-37.2%)
New York sample: 39.1 (95% CI, 35.1%-43.1%)
US Criteria
Canadian sample: 18.2% (95% CI, 14.9%-21.5%)
New York sample: 20.1% (95% CI, 18.4%-21.8%)
All hospitals performing CA and CABG in Ontario and British Columbia; 15 randomly selected hospitals that provide CA in New York State; 15 randomly selected hospitals that provide CABG in New York State553 randomly selected patients in Canada, 1333 randomly selected patients in New York. New York patients had procedures performed in 1990; Canadian patients had procedures performed between 4/89 and 3/90. Cases performed primarily for valve surgery were excluded
Coronary Angiography 11 4% overall; varied from 0% - 9% among hospitals (NS)20% overall; varied from 13%-31% among hospitals (NS)15 randomly selected, non federal hospitals in New York State providing coronary angiographyRandom sample of 1335 patients undergoing angiography in New York State in 1990, distributed across the 15 hospitals
CABG 12 6% (5/85), compared to 1/85 identified by the original panel of NY cardiologists12% (10/85), compared to 1/85 identified by the original panel of NY cardiologistsA follow-up to the above study was done using a sub-sample of the patients. A panel of Duke University cardiologists reviewed 308 records for appropriateness
CABG 13 1.6% (95% CI, 0.6% - 2.5%) overall; increased to 1.9% when revised by Consortium surgeons. Varied from 0% to 5% across hospitals (P=0.02) (NS)7% (95% CI, 5%-8%) overall; did not vary significantly across hospitalsAll 12 Academic Medical Center Consortium hospitals1156 patients w/CABG surgery in 1990 w/o previous CABG or concurrent valve replacement surgery, randomly selected consecutively until 100 records were obtained from each facility
CABG 14 2.4% (95% CI, 2% - 3%) overall; varied from 0% to 5% among hospitals (NS)7% (95% CI, 5%-9%) overall; varied from 3% to 15% among hospitals (NS)15 randomly selected, non federal hospitals in New York State providing CABG surgeryRandom sample of 1338 patients undergoing isolated CABG in NY in 1990; those undergoing another major procedure in conjunction with CABG (55) were excluded; records missing critical data (13) were also excluded
CABG 9 16% overall26% overallTrent region; coronary angiography is done in 3 referral centers and CABG in 2 centers.319 randomly selected patients with CABG between 7/1/87 and 6/31/88. Exclusions: incomplete records, congenital heart disease, transplant, primary valve disease
CABG 10 Canadian Criteria
Canadian sample: 3.6% (95% CI, 2.0%-5.1%)
New York sample: 5.5% (95% CI, 4.0%-7.1%)
US Criteria
Canadian sample: 2.5% (95% CI, 1.2%-3.8%)
New York sample: 2.4% (95% CI, 1.6%-3.1%)
Canadian Criteria
Canadian sample: 11.3% (95% CI, 8.7%-14.0%)
New York sample: 9.9% (95% CI, 8.4%-11.4%)
US Criteria
Canadian sample: 9.0% (95% CI, 6.6%-11.4%)
New York sample: 7.0% (95% CI, 5.1%-9.0%)
All hospitals performing CA and CABG in Ontario and British Columbia; 15 randomly selected hospitals that provide CA in New York; 15 randomly selected hospitals that provide CABG in New York556 randomly selected CABG patients in Canada, 1336 randomly selected CABG patients in New York. New York patients had procedures performed in 1990; Canadian patients had procedures performed between 4/89 and 3/90. Cases performed primarily for valve surgery were excluded
CABG (referral after Coronary Angiography) 16 9.7% overall12.3% overallSeven of eight public Swedish heart centers. (perform 92% of all bypass surgeries in Sweden)Consecutive series of 2767 patients with coronary angiography between 5/94 and 1/95 who were considered for coronary revascularization
CABG 15 RAND criteria: 42%
ACC/AHA criteria:17%
RAS criteria: 46%
RAND criteria: 17%
ACC/AHA criteria:no rating
RAS criteria: no rating
An academic medical center cardiac catheterization laboratory and a VA cardiac catheterization lab in Maryland153 catheterization patients referred to a either Univ. of Maryland Cardiac Catheterization Lab and/or Baltimore VA Medical Center Cardiac Catheterization Lab with a variety of cardiac diagnoses and treatments between 3/93 and 10/94
PTCA 15 RAND criteria: 22%
ACC/AHA criteria: 49%
RAS criteria: 35%
RAND criteria: 29%
ACC/AHA criteria: no rating
RAS criteria: no rating
An academic medical center cardiac catheterization laboratory and a VA cardiac catheterization lab in Maryland153 catheterization patients referred to a either Univ. of Maryland Cardiac Catheterization Lab and/or Baltimore VA Medical Center Cardiac Catheterization Lab with a variety of cardiac diagnoses and treatments between 3/93 and 10/94
PTCA (referral after Coronary Angiography) 16 38.3% overall30.0% overallSeven of eight public Swedish heart centers. (perform 92% of all bypass surgeries in Sweden)Consecutive series of 2767 patients with coronary angiography between 5/94 and 1/95 who were considered for coronary revascularization
PTCA 12 12% (11/95), compared to 9/95 identified by the original panel of NY cardiologists27% (26/95), compared to 23/95 identified by the original panel of NY cardiologistsA follow-up to reference 11 was done using a sub-sample of the patients. A panel of Duke University cardiologists reviewed 308 records for appropriateness
Diagnostic testing for Coronary Artery Disease 17 3% (7/215) overall39% (42/109) overallFive urban Los Angeles area hospital emergency departments, 2 public, 1 private NFP, 1 university med. ctr., 1 NFP HMO356 patients with chest pain not due to myocardial infarction or history of cardiac disease between Oct 94 and Apr 96. Those not receiving ECG during initial eval were excluded
Hip Joint Replacement 25 8.3% (86/997) overall;
6.7% - 16.3%. for osteoarthritis, 0% - 25.0% for avascular necrosis, 0% for fracture and revision
32.4% (334/997) overall; 42.3%-50.0% for osteoarthritis, 0%- 50.0% for avascular necrosis, 9.6%-40.0% for fracture, 3.4%-18.9% for revision5 large public hospitals (4 university affiliated, 1 community-based)997 patients with osteoarthritis, avascular necrosis, hip fracture, or revision who were undergoing HJR between 12/96 and 12/97
Hip and Knee Joint Replacement 21 High-rate region: 6.1%
Low-rate region: 6.4%

Rated by subspecialists
High-rate region: 11.4%
Low-rate region: 11.0%
Not evaluated7 high-rate region hospitals: 3 university affiliated, 4 community
8 low-rate region hospitals: 5 university affiliated, 3 community
371 patients in the high rate region and 565 in the low rate region with surgery performed between 4/1/92 and 3/31/93 without fracture or other indication, and < 60 years old
Hysterectomy 18 16% overall; varied across plans from 10% to 27%25% overallSeven managed care organizationsRandom sample of 642 hysterectomies (non-emergency and non-oncological) between 8/1/89 and 7/31/90, among women enrolled in a health plan 2 years prior to surgery
Hysterectomy 23 70% (367/497);
varied from 45% to 100% across diagnoses indicative of hysterectomy
Not evaluatedNine capitated medical groups in Southern California497 women receiving hysterectomy between 8/93 and 7/95 in one of nine capitated medical groups in S. California
Laminectomy 19 23%29%One Swiss University hospital196 patients with surgical treatment for herniated discs
Lumbar Discectomy and Spinal Stenosis surgery 20 38% (126/328)Combined with "appropriate" categoryTwo university neurosurgery departments328 consecutive patients undergoing surgery for Lumbar Disc Hernia of Spinal Stenosis at hosp A from 4/92-10/92 and at hosp B from 5/93-9/93. Patients with neoplasms were excluded
Upper GI Tract endoscopy 3 17% overall; varied from 15% to 19% among sites11% overall; varied from 8% to 14% among sites5 sites of varying utilization for the 3 procedures selected from Medicare claims submitted by physicians in Arkansas, Colorado, Iowa, Mass., Montana, Penn., S. Carolina, and N. Calif.Random sample of Medicare beneficiaries for each procedure (claims submitted in 1981) at each site (high, average, and low use geographic areas)
Upper GI Tract endoscopy 4 Varied by county from 0%-25%Not evaluated23 adjacent rural and urban, large and small, counties in one large, populous stateSampled procedures by Medicare billing codes performed on 614 UGI patients in 1981, aged 65 years and older

Table 2A. Studies of ACSC indicators

StudyPayerLevelValidating variables
Begley, 1994 allarea (city/state)none
Bierman, 2000 allpersonincome (area, all), Medicaid (asthma, diabetes), race (asthma, diabetes), race (asthma, diabetes)
Billings, 1993 allarea (zip code)income, race (diagnosis-specific findings in Billings, 1992)
Billings, 1996 all and Canadian health systemarea (zip code)Income, national health insurance
Bindman, 1995 allarea (zip code cluster/MSSA)self-rated access (all, but strongest for asthma, CHF, DM), income, education, uninsured, Medicaid
Blustein, 1998 Medicarepersoneducation, income, usual source of care, race, supplemental Medicaid or other insurance, prior physician visits
Casanova, 1995 Spanish national health systempersonilliteracy (area), unemployment (area), income (area), school enrollment (area), availability of health center, availability of pediatrician
Casanova, 1996 Spanish national health systempersonfamily income, paternal/maternal employment, social class, paternal/maternal education, prior physician visit, pediatrician
Claudio, 1999 allareaincome, % minority, % children under 18, lack of access to preventative health care, poor housing conditions, environmental exposures, genetic suseptibility
Connell, 1984 Medicare and Medicaidhospitalizationreside in nursing home, payment source, quality of care (appropriate diagnostic tests, use of IV insulin)_
Culler, 1998 Medicarepersonrace, education, living alone/with spouse, income, supplemental Medicaid or other insurance, problems obtaining care, health professional shortage area, core SMSA or rural county
Djojonegoro 2000 allarea (zip code)income, race (person)
Gadomski, 1998 Medicaidperson/quarterenrollment in Maryland Access to Care (Medicaid managed care with gatekeeper), SSI or AFDC recipients, urban residence, race
Gill, 1997 Medicaidpersonregular source of care, regular care from primary care physician
Gill, 1998 Medicaidpersoncontinuity index (function of number of ambulatory visits and unique providers)
Giuffrida, 1999 English Health Services Areaareasupply of secondary care (physicians, hosp beds), morbidity measures (limiting l.t. illness, permanently sick), socioeconomic characteristics (pop density, unemploy, no central heating, crowded accomodations, no car, new commonwealth, retired living alone, students, social class 1 & 2, pop mobility), year
Kaestner, 2000 allhospital-income category -yearincome
Krakauer, 1996 Medicarearea (HCSA)race/ethnicity, supplemental Medicaid or HMO coverage, urban residence, income, unemployment, active, generalist, med spec, & surg spec MD/pop ratio, generalists/MD, med spec/MD, surg spec/MD
Laditka, 1999 (JWA) Medicarearea (hospital market area)income
Laditka, 1999 (JHSP) Medicaidarea (hospital market area)Medicaid proportion
McConnochie1997 allarea (zip code)inner city or "other urban" residence (person), late prenatal care, maternal education, uninsured, Medicaid, race, unemployment, lack of telephone/automobile, childhood poverty
Millman, 1993 allareaincome (all except congenital syphilis, immunization/preventable, dental; gastroenteritis O:E<2)
O' Sullivan 1996 allareageographic region, insurance status
Pappas, 1997 allpersonrace, income (area), uninsured, Medicaid)
Parchman, 1994 allarea, (HSA)FP-GP/pop ratio, gen IM/pop ratio, gen ped/pop ratio, income
Parchman, 1999 Medicarepersonprimary care shortage area, supplemental Medicaid, income, race, education, marital status
Rohrer, 1997 allareageographic region
Schreiber, 1997 allarea (zip code)poverty, race, pop density, primary care MD/pop ratio, health professional shortage area, proximity to hospital
Shi, 1999 allpersonrace, income (area), non-MSA, primary care MD, uninsured, Medicare/Medicaid
Shukla, 1997 allpersonrace (all conditions), insurance type (diabetes, hypertension, asthma), localities
Silver, 1997 Medicarearea (county)rural regions of Utah (0/4 anemia, 2/4 asthma, 4/4 cellulitis, 2/4 CHF, ¼ DM, ¾ gastric, 2/4 hypertension, 4/4 pneumonia
Solet, 2000 allareaincome/ poverty status
Taroni, 1997 Italian health systemarea (local health unit)low overall hospital use
Weissman, 1992 allpersonuninsured (0/2 rupt appendix, ½ asthma, 2/2 cellulitis, ½ CHF, 2/2 DM, 2/2 gangrene,½ hypokalemia, ½ immunizable, 2/2 malig. htn. 2/2 pneumonia, ½ pyelo, 2/2 ulcer), Medicaid, race

Table 3A. Studies of ACSC indicators

Study  Acute Myocardial InfarctionAcute PoliomyelitisAnemia, Iron deficiencyAnemia, anyAnginaAsthmaAsthma & bronchitisCellulitis or abscessCellulitis, or other soft tissue infectionCellulitis, abscess, lymphadenitisCellulitis with skin graftChest painCongestive heart failureCHF (plus pulmonary edema)CHF and shockCongenital syphilisConvulsions 'A' & 'B'COPDDehydration/volume depletionDental conditionsDiabetes ADiabetes BDiabetes CDiabetes w/ketoacidosis or comaDiabetes, UncontrolledDiabetes with complicationsDiabetes, allEpilepsy or grand mal statusFailure to thriveGangreneGastroenteritisGastrointestinal hemorrhage, upperHigh risk/complicated deliveryHypertensionHypertension, malignantHypoglycemiaHypokalemiaImmunizable conditionsImmunization- related or preventableImmunization- preventable pneumoniaInvasive cervical cancerKidney/UTILow infant birth weightMalignant neoplasm of female breastMeaslresMumpsNutritional DeficiencyOtitis MediaPelvic Inflammatory DiseasePerforated or Bleeding UlcerPneumonia, bacterial (outpatient treatable)Pneumonia, bacterial (any)Pneumonia or pleurisyPneumonia, Bronchitis, Bronchiolotis, PharyngitisPneumonia, sinsusitisPyelonephritisRespiriatory infections (including pulmonary TB)Rheumatic feverRuptured appendixSevere ENT infectionStroke with hypertensionTB, otherTB, pulmonary
Begley, 1994 Adult Peds Adult & Peds X    X       X  XX       X X       X  X               XX**     X  
Bierman, 2000 Adult Peds Adult & Peds      X                  X              X                       
Billings, 1993 Adult Peds Adult & Peds   X X
X
X
X
   X
X
X
X
  X
X
 XX
X
X
X
X
X
X
X
X
X
X
X
X
X
    X
X
X X
X
  X
X
 X
X
  X
X
  X
X
    X
X
 X
X
 X
X
        X
X
 X
X
X
X
Billings, 1996 Adult Peds Adult & Peds   X XX   XX  X XXXXXXXX    XX X  X X  X  X    X X X        X XX
Bindman, 1995 Adult Peds Adult & Peds      X       X   X  XXX          X                             
Blustein, 1998 Adult Peds Adult & Peds     XX   XX  X   XXXXXX    X  X  X X  X  X    X X          X XX
Casanova, 1995 Adult Peds Adult & Peds   X XX   X   X XXXXXXXX    XX X  X X  X  X    X X X        X XX
Casanova, 1996 Adult Peds Adult & Peds   X XX   X   X XXXXXXXX    XX X  X X  X  X    X   X        X XX
Claudio, 1999 Adult Peds Adult & Peds      X                                                         
Connell, 1984 Adult Peds Adult & Peds                           X                                    
Culler, 1998 Adult Peds Adult & Peds     XX   XX  X  XXX XXX    X  X  X X     X        X        X   
Djojonegoro 2000 Adult Peds Adult & Peds   X XX       X XXXXXXXX    X  X  X X  X  X    X X X        XXXX
Gadomski, 1998 Adult Peds Adult & Peds   X  X   X     XX X XXX    XX X    X  X  X    X   X        X XX
Gill, 1997 Adult Peds Adult & Peds     XX

X
   XX  X

X
   X

X
X X

X
X

X
X

X
       X  X

X
 X               X       X   
Gill, 1998 Adult Peds Adult & Peds     XX   X   X  XXXXXXX    X  X  X X               X       X   
Guiffrida, 1999 Adult Peds Adult & Peds      X                                                         
Kaestner, 2000 Adult Peds Adult & Peds                 X X         X X                                
Krakauer, 1996 Adult Peds Adult & Peds     XX   XX  X   XX XXX       X  X X     X        X            
Laditka, 1999 (JWA) Adult Peds Adult & Peds     XX   XX  X  XXXXXXX    X  X  X X  X  X    X X X        X XX
Laditka, 1999 (JHSP) Adult Peds Adult & Peds   X X
X
X
X
   X
X
X
X
  X
X
  X
X
X
X
X
X
X
X
X
X
X
X
X
X
    X
X
X X
X
 XX
X
 X
X
  X
X
  X
X
    X
X
 X
X
 X
X
        X
X
 X
X
X
X
McConnochie1997 Adult Peds Adult & Peds                 X X         X X                                
Millman, 1993 Adult Peds Adult & Peds     XX   XX  X XXXXXXXX    X  X  X X  X  X        X        X   
O'Sullivan, 1996 Adult Peds Adult & Peds   X XX   XX  X  XXXXXXX    X  X  X X  X  X    X X X        X  X
Pappas, 1997 Adult Peds Adult & Peds      X X    X          X     X    X XX           X X   X  X    
Parchman, 1994 Adult Peds Adult & Peds     XX       X      XXX         X                 X
X
            
Parchman, 1999 Adult Peds Adult & Peds     XX   X   X  XXX XXX    X  X  X X     X        X        X   
Rohrer, 1997 Adult Peds Adult & Peds     X XX   X  X  X        X      X             X    X   X      
Schreiber, 1997 Adult Peds Adult & Peds   X XX   XX  X XXXXXXXX    XX X  X X  X  X    X X X        X XX
Shi, 1999 Adult Peds Adult & Peds   X X
X
X
X
   X
X
X
X
  X XX
X
XX
X
X
X
X
X
X
X
X
X
    X
X
X X
X
  X X  X
X
  X
X
    X
X
 X X
X
        X
X
 X
X
X
X
Shukla, 1997 Adult Peds Adult & Peds  X   X                  X        X      X XXXX           X    X

X*
Silver, 1997 Adult Peds Adult & Peds    X X  X   X             X*     X X#                    X         
Solet, 2000 Adult Peds Adult & Peds      X                                                         
Taroni, 1997 Adult Peds Adult & Peds                                                                
Weissman, 1992 Adult Peds Adult & Peds      X
X
 X
X
    X
X
          X
X
     X
X
    X
X
 X
X
X
X
           X
X
 X
X
   X
X
  X
X
    

*Removed "diabetes mellitus without mention of complication, not stated as uncontrolled"Includes other respiratory TB (01)

# Added benign hypertension and hypertensive renal failure

** Separate indicators for pregnancy (646.6+590.1) and others (590.1); removed chronic or NOS pyelonephritisIncludes other respiratory TB (012)

Table 4A. Studies of ACSC Indicators- Pediatric Avoidable Hospitalizations

Study Acute Ottisis MediaAcute pyelonephritisAsthmaBronchitisBurnsCongenital Lower Bowel Obstruction*** Diabetic ketoacidosisGastroenteritisHypernatremic*** Immunizable DiseasesJaundice*** MastoiditisNausea and VomitingObstuctive Cardiac Defects*** PIDUpper Respiratory InfectionUTIViral MeningitisViral SyndromeVolume depletion***
Gadomski, 1998 XXXXXXXXXXXXXXXXXXXX

*** Infant readmission within 2 weeks of DOB

Table 5A. Studies of ACSC Indicators-Discretionary Hospitalization of Infants

Study Croup/TracheitisFailure to ThriveFever, acute unexplainedGastroenteritis/ DehydrationGastrointestinal disorders, otherLower Respiratory IllnessNonspecific signs and symptomsSeizure w/o intractactable mentionedUTIViral Meningitis
Kaestner, 2000 XXXXXXXXXX
McConnochie, 1997 XXXXXXXXXX

Table 6A. Studies of ACSC Indicators- Late Hospitalization

Study AppendicitisDiverticular diseaseHernia, ExternalPeptic UlcerPneumonia, bacterialUterine Fibroma
Taroni, 1997 XXXXXX
1.
Wong JH, Findlay JM, Surez-Alamazor ME Regional performance of Carotid Endarterectomy. Stroke. . 1997;28:891–898. [PubMed: 9158621]
2.
Matchar DB, et al Influence of projected complication rates on estimated appropriate use rates for carotid endarterectomy HSR. 199732(3):325–342. [PMC free article: PMC1070194] [PubMed: 9240284]
3.
Chassin MR, et al Does inappropriate use explain geographic variations in the use of health care services: A study of three procedures. JAMA. . 1987;258:2533–2537. [PubMed: 3312655]
4.
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