The objective of this study is to determine the nature and distribution of emergencies and the workload of the emergency medical services system. Staff members of the Injury Control Program were assigned to the San Francisco Health Department of accumulate reports on emergency patients treated by the city's emergency medical service. Reports on ambulance and non-ambulance patients included site, time, circumstances, personal and emergency data, state of consciousness, prior aid, discharge and disposition, provisional diagnosis, treatment and condition. Judgement was made on the urgency for treatment and use of the ambulance. In 1964 the population served by the medical services system included 753,000 residents and 199,000 transients. The total cost of operation to the city and county was about $1,100,000 per year. There was 18,350 reports on ambulance patients and 39,470 on non-ambulance patients. A 20% sample was used. The proportion of white emergency patients was nearly equal to the proportion of white persons, Negroes 1.4 times greater, Indians 4 times and Orientals who constitute 7.9% of the population were only 3.3% of the emergency cases. The percentage of total ambulance cases involving persons 35-84 years was from 1 to 2.6 greater than their representation; in non-ambulance cases ages 1-44 were greater, 45-84 less. More than 66% suffered accidental injury. The ratio of injury to disease was highest for the weekend. About 30% of all emergencies occurred between midnight and noon. Calls and admissions peaked at 4 p.m. to 6 p.m. Average number of ambulance runs per day was 43. 43% cite the street or highway as place of emergency, 35% cite the home. 90% of the patients were conscious. In 67% of the emergencies time spent at the scene was 15 minutes or more. Of the 7,671 patients for which information was reported, 87 were judged to have needed an ambulance. About 80% of all patients were discharged in 15 minutes. The accumulation of information provides input data for developing computer simulation studies on distribution of the workload in the emergency hospital and in other parts of an emergency medical service system. /MW/

  • Availability:
  • Corporate Authors:

    Superintendent of Documents

    P.O. Box 371954
    Pittsburgh, PA  United States  15250-7954
  • Authors:
    • King, B C
    • Sox, E D
  • Publication Date: 1967-11

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00127180
  • Record Type: Publication
  • Source Agency: National Safety Council Safety Research Info Serv
  • Files: TRIS
  • Created Date: Jan 14 1976 12:00AM