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Measurement of Health Output – experiences from the Norwegian National Accounts

Measurement of Health Output – experiences from the Norwegian National Accounts. by Ann Lisbet Brathaug abr@ssb.no. Basic concepts. In general, price and volume measurements relate to the decomposition of transactions in current prices into their price and volume measurement

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Measurement of Health Output – experiences from the Norwegian National Accounts

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  1. Measurement of Health Output – experiences from the Norwegian National Accounts by Ann Lisbet Brathaug abr@ssb.no

  2. Basic concepts • In general, price and volume measurements relate to the decomposition of transactions in current prices into their price and volume measurement • The price components should include changes arising solely from price changes • Changes related to quantity, quality and compositional changes should be included in the volume components

  3. Estimating health output at constant prices • Production of individual and collective health services covers both market and non-market output • market output is sold at market prices • non-market output - which covers most health services - no market prices exists • Two options for constant price estimates: • direct volume measurements (output indicator method) or • deflating inputs (input methods) • Output indicator methods is recommended by Eurostat • Consistency between market and non-market constant price estimates is important

  4. Eurostat’s definition of health output • The health output is the quantity of health care received by patients, adjusted to allow for the qualities of services provided, for each type of health care. The quantity of health care received by patients should be measured in terms of complete treatments (Eurostat 2001)

  5. Complete treatments • In theory this requires account to be taken of the whole bundle of complementary services constituting a treatment • In practice, this is difficult • In Norway we have used a narrow concept of treatments • capturing full treatment only within each of the services distinguished

  6. Quality adjustments • Quality changes should cover both • changes in physical characteristics of the product and • changes in the product mix • Adjusting for quality is a challenge • So far, no explicit quality indicators are taken into account in the Norwegian estimates • except for what is covered of structural changes by using a detailed breakdown of output • Whether the output measure is constructed by direct quantity index or through deflation, the major measurement problem is really the same. If you do it on the price side, you have to make quality adjustments to the prices for improved treatments. If you do it with a direct quantity index, you have to make the quality adjustments to the quantities. The difficult problem of adjusting for quality change is exactly the same in either case (Triplett 2001).

  7. Norwegian example – hospitals • General hospitals • Distinguish between inpatients and outpatients, included day care treatments • For inpatients the volume indicator is based on DRGs adjusted for readmissions • Outpatients – number of consultations • Psychiatric hospitals/psychiatric departments in general hospitals • no DRG system and the indicators are thus based on • the number of bed days (occupation days) • number of outpatient consultations • number of day cases

  8. Different output measures for inpatients in government hospitals(excluded psychiatry). Per cent growth from previous year 2003 2004 Discharges 4.1 1.6 DRG – no adjustment for readmissions 4.5 1.7 DRG adjusted for readmissions 4.4 1.8

  9. Total output from government hospitals (excluded psychiatry). Per cent growth from previous year 2003 2004 Inpatients (DRG adjusted for readmissions) 4.4 1.8 Day cases (number of consultations) 14,8 7.3 Outpatients (number of consultations) 5.4 4.2 Total output growth for government hospitals 5.6 2.8

  10. Challenges regarding cost weights • We have detailed cost weights from the hospitals accounts • the costs are classified by a detailed breakdown on functions and type of expenditure • all this detailed information on costs is available for each hospital and • easy to separate the costs related to general hospital treatments, psychiatric treatments within a general hospital and psychiatric treatments in a mental hospital/institution • but • it is difficult to separate the costs related to outpatients and inpatients respectively, especially for general hospitals • from 2005 new functions related to psychiatric treatments give have improved the estimates

  11. Psychiatric hospitals/institutions. Per cent growth in output from previous year 2000 2001 2002 2003 2004 2005 Adults Bed-days -2,7 -4,3 -1,3 -3,5 -4,4 -1,6 Outpatients (consultations) 4,8 5,2 11,4 14,8 6,7 17,3 Day cases -7,7 -5,3 -25,9 -12,3 -8,0 -5,5 Children and adolescents Bed-days -3,2 1,3 7,6 10,8 -2,4 0,6 Outpatients (consultations) 3,8 7,3 21,2 24,0 9,3 47,6 Day cases 7,3 -2,1 10,9 2,6 -20,9 -33,5 Weighted output indicator 0,3 2,0 -1,4 4,8

  12. Concluding remarks • quality adjustments a difficult task, except quality related to structural changes • needs more investigation • cost weights are partly a challenge • even though I think we are quite lucky in Norway with the access we have to detailed hospital accounts and detailed local government accounts • we still need to improve our methods and indicators

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