• Qual Manag Health Care · Jul 2011

    Multicenter Study

    The best period for mortality rates associated with hospital stay: hospital mortality performs well for nonsurgical diagnostic groups.

    • Jürgen Stausberg.
    • Institut für Medizinische Informationsverarbeitung, Biometrie und Epidemiologie (IBE), Ludwig-Maximilians-Universität München, Germany. juergen.stausberg@ibe.med.uni-muenchen.de
    • Qual Manag Health Care. 2011 Jul 1; 20 (3): 198-206.

    BackgroundMortality is widely used to assess quality of hospital care. Inpatient mortality is easily available in administrative data. The use of periods other than length of stay is questionable. We compared different overlapping and disjunctive periods for the calculation of mortality associated with hospital care.Subjects And MethodsInformation from public quality reports covering insured from local sickness funds were retrospectively recorded. Nineteen thousand eight hundred thirteen patients from 69 hospitals were included for 5 tracers. The relationship between different periods, or time spans from admission to death or discharge, was assessed calculating the nonparametric correlation coefficient for mortality rates and standardized mortality ratios. The periods were hospital stay, 30, 90, and 365 days after admission, 31 to 90 days, and 91 to 365 days. The variation within each period was assessed with the coefficient of variation.ResultsThere is a strong relationship between overlapping periods for nonsurgical tracers with r > 0.559 (P < .001). The surgical tracers present a reverse relationship between 30-day and 91-day to 365-day mortality with r = -0.724 (P = .012) for colorectal carcinoma with operation and r = -0.490 (P = .028) for total hip replacement in case of femur fracture. Nonsurgical tracers show a decreasing variation of mortality rates with extending periods, whereas colorectal carcinoma shows a stable and small variation.ConclusionsFor nonsurgical tracers, hospital stay is the best period to assess mortality associated with hospital stay. The courses (sequences of 4 mortality rates for one tracer in a hospital) for surgical tracers, in particular colorectal carcinoma, appear as a harvesting effect with an association of high in-hospital mortality with low mortality in the medium term.

      Pubmed     Full text   Copy Citation     Plaintext  

      Add institutional full text...

    Notes

     
    Knowledge, pearl, summary or comment to share?
    300 characters remaining
    help        
    You can also include formatting, links, images and footnotes in your notes
    • Simple formatting can be added to notes, such as *italics*, _underline_ or **bold**.
    • Superscript can be denoted by <sup>text</sup> and subscript <sub>text</sub>.
    • Numbered or bulleted lists can be created using either numbered lines 1. 2. 3., hyphens - or asterisks *.
    • Links can be included with: [my link to pubmed](http://pubmed.com)
    • Images can be included with: ![alt text](https://bestmedicaljournal.com/study_graph.jpg "Image Title Text")
    • For footnotes use [^1](This is a footnote.) inline.
    • Or use an inline reference [^1] to refer to a longer footnote elseweher in the document [^1]: This is a long footnote..

    hide…