title: Emergency respiratory admissions: influence of practice, population and hospital factors.
abstract: OBJECTIVE
  To determine the influence of population, hospital and general practice characteristics on practice admission rates for asthma and chronic obstructive pulmonary disease (COPD) in England.
  
  
  METHODS
  Cross sectional study using Hospital Episode Statistics (HES), routine population data and primary care data. Admissions for all general practices in England during 2005-06, adjusted for age and sex composition of practice population. Univariable analysis of population, practice and hospital care provision variables, including prevalence and quality data. Significant factors included in multiple regression Poisson model.
  
  
  RESULTS
  Admissions from 8169 practices were included. Risk of admission for each condition increased with deprivation, prevalence and smoking. Admission rates were higher in urban than rural practices. Hospital bed availability and distance to the nearest emergency department were also significantly associated with risk of admission. The associations with practice factors including practice size and quality markers varied across conditions.
  
  
  CONCLUSIONS
  Practice population, geographic and hospital supply factors are consistently associated with asthma and COPD admissions. Higher smoking rates among such patients in a practice are associated with higher admission rates. There is little evidence from this study that other modifiable general practice factors are important in influencing admission rates.
authors: Academic Unit of Primary Health Care, University of Bristol, Bristol, UK. sarah.purdy@bristol.ac.uk
authors: Sarah
authors: S
authors: Purdy
authors: Thomas
authors: T
authors: Griffin
authors: Chris
authors: C
authors: Salisbury
authors: Debbie
authors: D
authors: Sharp
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D001249:Asthma / Q000628:therapy*; D002648:Child; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D004636:Emergency Service, Hospital / Q000706:statistics & numerical data*; D004739:England; D005260:Female; D058006:General Practice / Q000706:statistics & numerical data*; D006739:Hospital Administration / Q000706:statistics & numerical data; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D010343:Patient Admission / Q000706:statistics & numerical data*; D011203:Poverty / Q000706:statistics & numerical data; D010818:Practice Patterns, Physicians' / Q000706:statistics & numerical data; D015995:Prevalence; D029424:Pulmonary Disease, Chronic Obstructive / Q000628:therapy*; D012111:Residence Characteristics / Q000706:statistics & numerical data; D012737:Sex Factors; D012907:Smoking / Q000453:epidemiology; D055815:Young Adult