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Referencing data found in the IPD

Clarivate Analytics takes great care to provide complete citations for all sources used in compiling our data so that our clients may in turn cite these sources appropriately. All Clarivate Analytics databases cite surveys published by the National Center for Health Statistics (NCHS) in Hyattsville, Maryland. In addition, the Incidence and Prevalence Database (IPD) provides Article Reviews, IPD Summaries, and Global Incidence and Prevalence Reports based primarily on publications from peer-reviewed medical literature.



How to cite Incidence and Prevalence Database (IPD)

The sources of information throughout the IPD come mainly from medical journals and other published information. Source information is noted throughout the IPD. To cite these sources, note the reference to the original publication and consider the suggest format in the examples below.

Borrell LN et al; "Childhood Obesity and Asthma Control in the GALA II and SAGE II Studies." American Journal of Respiratory and Critical Care Medicine; V.187; 4/1/13; p697. Cited in Clarivate Analytics, Incidence and Prevalence Database, http://www.tdrdata.com; Accessed [date here].

Locating source information

  • Article Reviews: Full article citation appears at the beginning of each Article Review.
  • Global Incidence and Prevalence Report: Abbreviated article citation appears at the end of each paragraph (consult Article Review for full citation by clicking on a source link in the report).
  • IPD Summary: For data found in a table, see the corresponding footnote for source information. Footnotes can also be clicked to view the Article Review and full citation information. Elsewhere, data passages are sourced and linked to Article Reviews.



How to cite U.S. Patient Data

To cite the NCHS datasets used in the U.S. Patient Data, refer to the examples below. The survey year in the citation should correspond with the year of data that you are citing. For additional details on citing NCHS databases, consult "Citing NCHS Publications" at the NCHS website.

  • Hospital Inpatients:
    National Center for Health Statistics. National Hospital Discharge Survey, 2010. Cited in Clarivate Analytics, U.S. Patient Volume Database, http://www.tdrdata.com; Accessed [date here].
  • Physician Office Visits:
    National Center for Health Statistics. National Ambulatory Medical Survey, 2010. Cited in Clarivate Analytics, U.S. Patient Volume Database, http://www.tdrdata.com; Accessed [date here].
  • Emergency Department Visits:
    National Center for Health Statistics. National Hospital Ambulatory Medical Survey, 2010. Cited in Clarivate Analytics, U.S. Patient Volume Database, http://www.tdrdata.com; Accessed [date here].
  • Hospital Outpatients:
    National Center for Health Statistics. National Hospital Ambulatory Medical Survey, 2010. Cited in Clarivate Analytics, U.S. Patient Volume Database, http://www.tdrdata.com; Accessed [date here].