Frailty index: Difference between revisions
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FI was developed by Dr. Kenneth Rockwood and Dr. Arnold Mitnitski at [[Dalhousie University]] in [[Halifax, Nova Scotia|Halifax]], [[Nova Scotia]], [[Canada]]. |
FI was developed by Dr. Kenneth Rockwood and Dr. Arnold Mitnitski at [[Dalhousie University]] in [[Halifax, Nova Scotia|Halifax]], [[Nova Scotia]], [[Canada]]. |
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FI is defined as the proportion of deficits present in an individual out of the total number of age-related health variables considered. A frailty index can be created in most secondary data sources related to health by utilizing health deficits that are routinely collected in [[health assessment]]s. These deficits include [[diseases]], signs, symptoms, laboratory abnormalities, [[cognitive impairments]], and disabilities in activities of daily living.<ref name="MyUser_Biomedcentral.com_August_20_2015c">{{cite journal |url= |
FI is defined as the proportion of deficits present in an individual out of the total number of age-related health variables considered. A frailty index can be created in most secondary data sources related to health by utilizing health deficits that are routinely collected in [[health assessment]]s. These deficits include [[diseases]], signs, symptoms, laboratory abnormalities, [[cognitive impairments]], and disabilities in activities of daily living.<ref name="MyUser_Biomedcentral.com_August_20_2015c">{{cite journal |url= |title=BMC Geriatrics |volume=14 |issue=1 |pages=25 |newspaper=Biomedcentral.com |date= 2014-02-24|accessdate= August 20, 2015|doi=10.1186/1471-2318-14-25 |pmid=24559204 |pmc=3938909 |last1=Peña |first1=Fernando G. |last2=Theou |first2=Olga |last3=Wallace |first3=Lindsay |last4=Brothers |first4=Thomas D. |last5=Gill |first5=Thomas M. |last6=Gahbauer |first6=Evelyne A. |last7=Kirkland |first7=Susan |last8=Mitnitski |first8=Arnold |last9=Rockwood |first9=Kenneth }}</ref> |
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''Frailty Index (FI) = (number of health deficits present) ÷ (number of health deficits measured)'' |
''Frailty Index (FI) = (number of health deficits present) ÷ (number of health deficits measured)'' |
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For example, a person with 20 of 40 deficits collected has an FI score of 20/40 = 0.5; whilst for someone with 10 deficits, the FI score is 10/40 = 0.25. The FI takes advantage of the high redundancy in the human organism. This is why it is replicable across different [[database]]s even when different items and different numbers of items are used. The standard procedure for creating a frailty index are found in an open-access publication.<ref>{{Cite journal|last=Searle|first=Samuel D|last2=Mitnitski|first2=Arnold|last3=Gahbauer|first3=Evelyne A|last4=Gill|first4=Thomas M|last5=Rockwood|first5=Kenneth|date=2008-09-30|title=A standard procedure for creating a frailty index|journal=BMC Geriatrics|language=En|volume=8|issue=1|pages=24|doi=10.1186/1471-2318-8-24|pmc=2573877|pmid=18826625}}</ref> |
For example, a person with 20 of 40 deficits collected has an FI score of 20/40 = 0.5; whilst for someone with 10 deficits, the FI score is 10/40 = 0.25. The FI takes advantage of the high redundancy in the human organism. This is why it is replicable across different [[database]]s even when different items and different numbers of items are used. The standard procedure for creating a frailty index are found in an open-access publication.<ref>{{Cite journal|last=Searle|first=Samuel D|last2=Mitnitski|first2=Arnold|last3=Gahbauer|first3=Evelyne A|last4=Gill|first4=Thomas M|last5=Rockwood|first5=Kenneth|date=2008-09-30|title=A standard procedure for creating a frailty index|journal=BMC Geriatrics|language=En|volume=8|issue=1|pages=24|doi=10.1186/1471-2318-8-24|pmc=2573877|pmid=18826625}}</ref> |
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There are several frailty indices, including a clinical deficits frailty index (FI-CD) and a biomarker-based frailty index (FI-B).<ref name="MyUser2">{{cite journal |url= |
There are several frailty indices, including a clinical deficits frailty index (FI-CD) and a biomarker-based frailty index (FI-B).<ref name="MyUser2">{{cite journal |url= |title=BMC Medicine |volume=13 |issue=1 |pages=161 |newspaper=Biomedcentral.com |date= 2015-07-13|accessdate= August 20, 2015|doi=10.1186/s12916-015-0400-x |pmid=26166298 |pmc=4499935 |last1=Mitnitski |first1=Arnold |last2=Collerton |first2=Joanna |last3=Martin-Ruiz |first3=Carmen |last4=Jagger |first4=Carol |last5=von Zglinicki |first5=Thomas |last6=Rockwood |first6=Kenneth |last7=Kirkwood |first7=Thomas B. L. }}</ref> |
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== See also == |
== See also == |
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Revision as of 14:14, 9 May 2021
 | This article needs additional citations for verification. (September 2015) |
| Frailty index | |
|---|---|
 An elderly couple out for a walk. | |
| Purpose | measure health status in elderly |
The frailty index (FI) is used to measure the health status of older individuals; it serves as a proxy measure of aging and vulnerability to poor outcomes.
FI was developed by Dr. Kenneth Rockwood and Dr. Arnold Mitnitski at Dalhousie University in Halifax, Nova Scotia, Canada.
FI is defined as the proportion of deficits present in an individual out of the total number of age-related health variables considered. A frailty index can be created in most secondary data sources related to health by utilizing health deficits that are routinely collected in health assessments. These deficits include diseases, signs, symptoms, laboratory abnormalities, cognitive impairments, and disabilities in activities of daily living.[1]
Frailty Index (FI) = (number of health deficits present) ÷ (number of health deficits measured)
For example, a person with 20 of 40 deficits collected has an FI score of 20/40 = 0.5; whilst for someone with 10 deficits, the FI score is 10/40 = 0.25. The FI takes advantage of the high redundancy in the human organism. This is why it is replicable across different databases even when different items and different numbers of items are used. The standard procedure for creating a frailty index are found in an open-access publication.[2]
There are several frailty indices, including a clinical deficits frailty index (FI-CD) and a biomarker-based frailty index (FI-B).[3]
See also
References
- ^ Peña, Fernando G.; Theou, Olga; Wallace, Lindsay; Brothers, Thomas D.; Gill, Thomas M.; Gahbauer, Evelyne A.; Kirkland, Susan; Mitnitski, Arnold; Rockwood, Kenneth (2014-02-24). "BMC Geriatrics". Biomedcentral.com. 14 (1): 25. doi:10.1186/1471-2318-14-25. PMC 3938909. PMID 24559204.
{{cite journal}}:|access-date=requires|url=(help)CS1 maint: unflagged free DOI (link) - ^ Searle, Samuel D; Mitnitski, Arnold; Gahbauer, Evelyne A; Gill, Thomas M; Rockwood, Kenneth (2008-09-30). "A standard procedure for creating a frailty index". BMC Geriatrics. 8 (1): 24. doi:10.1186/1471-2318-8-24. PMC 2573877. PMID 18826625.
{{cite journal}}: CS1 maint: unflagged free DOI (link) - ^ Mitnitski, Arnold; Collerton, Joanna; Martin-Ruiz, Carmen; Jagger, Carol; von Zglinicki, Thomas; Rockwood, Kenneth; Kirkwood, Thomas B. L. (2015-07-13). "BMC Medicine". Biomedcentral.com. 13 (1): 161. doi:10.1186/s12916-015-0400-x. PMC 4499935. PMID 26166298.
{{cite journal}}:|access-date=requires|url=(help)CS1 maint: unflagged free DOI (link)
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