title: [Are health district prevalence studies useful in family practice? Report of a case: chronic obstructive pulmonary disease].
abstract: OBJECTIVE
  To determine the prevalence of COPD and smoking in a Health District, to correlate real, registered, and extrapolated morbidity. To determine personal, family and social profiles. To determine the validity of the lung function questionnaire.
  
  
  METHODS
  Prevalence study.
  
  
  METHODS
  Urban District Health.
  
  
  METHODS
  Random selection of 233 people aged 40-75years.
  
  
  METHODS
  Age, sex, pack/years, spirometry, pulse-oximetry, medication, income.
  
  
  METHODS
  Fagerström, Richmond, MOS, APGAR, and lung function.
  
  
  RESULTS
  Mean age was 53.7+7.6years, with 57.9% women. Registered morbidity for COPD 1.2% (0.5-3.9%). Prevalence 4.7% (1.5% female, 9.2% male), extrapolated prevalence: 10.2%. Registered morbidity for Smoking 10.7% (1-19.4%); prevalence: 18.5% (20% female, 16.3% male), extrapolated prevalence 23.95%. Lung function questionnaire: positive likelihood ratio 3.18; negative 0.1. High probability of COPD (59.5%) in >30 packs/year smokers. Smokers consume a mean of 20.8 packs/year. Women showed higher physical dependence (36% versus 21%). More probability of achieving successful smoking cessation in men (57.1% versus 44%). There was 14.7% perceived family dysfunction; 6.9% have a low global index of social support, and 9.1% in COPD subjects. More than two-thirds (70%) of COPD patients had never been hospitalized. There were 10% polymedicated patients compared to 60% in identified COPDs.
  
  
  CONCLUSIONS
  Prevalence of COPD and smoking (indicator of avoidable morbidity attributable to primary care) are substantially lower than the reference data. The lung function questionnaire is valid. There was evidence of inter-professional variability. Women smoke more, are more dependent and are less motivated to quit. Their family and social perception is worse. These investigations are essentials for community intervention and operational planning.
authors.affiliation: Centro de Salud Universitario Parquesol, Valladolid, España. Electronic address: veronica.casado@telefonica.net.
authors.forename: Verónica
authors.initials: V
authors.lastname: Casado Vicente
authors.affiliation: Centro de Salud Universitario Parquesol, Valladolid, España.
authors.forename: Andrés Enrique
authors.initials: AE
authors.lastname: Álvarez Hodel
authors.affiliation: Centro de Salud Universitario Parquesol, Valladolid, España.
authors.forename: Sofía
authors.initials: S
authors.lastname: Benéitez Bartolomé
authors.affiliation: Centro de Salud Universitario Parquesol, Valladolid, España.
authors.forename: Beatriz
authors.initials: B
authors.lastname: Marcos Sánchez
authors.affiliation: Centro de Salud Universitario Parquesol, Valladolid, España.
authors.forename: Sandra Margot
authors.initials: SM
authors.lastname: Navarro Contreras
authors.affiliation: Centro de Salud Universitario Parquesol, Valladolid, España.
authors.forename: Natalia
authors.initials: N
authors.lastname: Spaans Fernández
mesh_terms: D000328:Adult; D000368:Aged; D003430:Cross-Sectional Studies; D005194:Family Practice; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D029424:Pulmonary Disease, Chronic Obstructive / Q000453:epidemiology*; D012307:Risk Factors; D012907:Smoking / Q000453:epidemiology*; D013147:Spirometry; D014505:Urban Population
keywords: Actual prevalence; Chronic obstructive pulmonary disease; Community health; Enfermedad pulmonar obstructiva crónica; Health District; Morbilidad registrada; Prevalence extrapolated; Prevalencia extrapolada; Prevalencia real; Registered morbidity; Salud comunitaria; Zona básica de salud
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