PMID- 21778493 OWN - NLM STAT- MEDLINE DCOM- 20111006 LR - 20211020 IS - 1541-0048 (Electronic) IS - 0090-0036 (Print) IS - 0090-0036 (Linking) VI - 101 IP - 9 DP - 2011 Sep TI - Why health care process performance measures can have different relationships to outcomes for patients and hospitals: understanding the ecological fallacy. PG - 1635-42 LID - 10.2105/AJPH.2011.300153 [doi] AB - Relationships between health care process performance measures (PPMs) and outcomes can differ in magnitude and even direction for patients versus higher level units (e.g., health care facilities). Such discrepancies can arise because facility-level relationships ignore PPM-outcome relationships for patients within facilities, may have different confounders than patient-level PPM-outcome relationships, and may reflect facility effect modification of patient PPM-outcome relationships. If a patient-level PPM is related to better patient outcomes, that care process should be encouraged. However, the finding in a multilevel analysis that the proportion of patients receiving PPM care across facilities nevertheless is linked to poor hospital outcomes would suggest that interventions targeting the health care facility also are needed. FAU - Finney, John W AU - Finney JW AD - Center for Health Care Evaluation, VA Palo Alto Health Care System, Menlo Park, CA 94025, USA. john.finney@va.gov FAU - Humphreys, Keith AU - Humphreys K FAU - Kivlahan, Daniel R AU - Kivlahan DR FAU - Harris, Alex H S AU - Harris AH LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20110721 PL - United States TA - Am J Public Health JT - American journal of public health JID - 1254074 SB - IM MH - Bias MH - Confounding Factors, Epidemiologic MH - Data Interpretation, Statistical MH - Environment MH - Health Services Administration/*statistics & numerical data MH - Health Services Research/methods/*statistics & numerical data MH - Humans MH - Outcome and Process Assessment, Health Care/*statistics & numerical data MH - Quality Indicators, Health Care/*statistics & numerical data MH - Substance-Related Disorders/rehabilitation PMC - PMC3154212 EDAT- 2011/07/23 06:00 MHDA- 2011/10/07 06:00 PMCR- 2013/09/01 CRDT- 2011/07/23 06:00 PHST- 2011/07/23 06:00 [entrez] PHST- 2011/07/23 06:00 [pubmed] PHST- 2011/10/07 06:00 [medline] PHST- 2013/09/01 00:00 [pmc-release] AID - AJPH.2011.300153 [pii] AID - 300153 [pii] AID - 10.2105/AJPH.2011.300153 [doi] PST - ppublish SO - Am J Public Health. 2011 Sep;101(9):1635-42. doi: 10.2105/AJPH.2011.300153. Epub 2011 Jul 21.