12-Item Short Form Survey (SF-12): Difference between revisions

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== Objective  ==
== Objective  ==
The SF-12 is a self-reported outcome measure assessing the impact of health on an individual's everyday life. It is often used as a [[Quality of Life|quality of life]] measure.
The SF-12 is a shortened version of it's predecessor, the [[36-Item Short Form Survey (SF-36)|SF-36]], which itself evolved from the Medical Outcomes Study<ref>Ware J. SF-36 Health Survey Update. Spine. 2000. 25; 24: 3130-3139.</ref>. The SF-12 was created to reduce the burden of response<ref>Rand Health Care. 12-Item Short Form Survey (SF-12). Available from: https://www.rand.org/health-care/surveys_tools/mos/12-item-short-form.html. (Accessed 29 February 2020).</ref>.
The SF-12 uses the same eight domains as the SF-36:
1) Limitations in physical activities because of health problems.
2) Limitations in social activities because of physical or emotional problems
3) Limitations in usual role activities because of physical health problems
4) Bodily pain
5) General mental health (psychological distress and well-being)
6) Limitations in usual role activities because of emotional problems
7) Vitality (energy and fatigue)
8) General health perceptions


== Intended Population  ==
== Intended Population  ==
Like the  SF-36, the SF-12 is designed as a general measure of health so can be used with the general population


== Method of Use  ==
== Method of Use  ==
Patients fill out a 12 question survey which is then scored by a clinician or researcher.
Unlike the SF-36, the SF-12 is not available for free by its authors, due to a scoring programme. However, there is an online calculator [https://www.orthotoolkit.com/sf-12/ here] that uses the first version.
There is a scoring guide for both versions available [https://labs.dgsom.ucla.edu/hays/pages/programs_utilities here].


== Evidence  ==
== Evidence  ==
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=== Validity  ===
=== Validity  ===
When compared to the SF-36 in various patient groups varying in age, physical and mental health, the SF-12 scores were similar to the SF-36 but almost always had bigger standard errors<ref>Ware J, Kosinski M, Keller SD. A 12-Item Short-Form Health Survey: construction of scales and preliminary tests of reliability and validity. Med Care. 1996. 34; 3:220-33.</ref>.
A separate study<ref>Jenkinson C, Layte R, Jenkinson D, Lawrence K, Petersen S, Paice C, Stradling J. [https://www.deepdyve.com/lp/oxford-university-press/a-shorter-form-health-survey-can-the-sf-12-replicate-results-from-the-4ndcljbRNl A shorter form health survey: can the SF-12 replicate results from the SF-36 in longitudinal studies?] Journal of Public Health. 1997. 19; 2: 179-186. Accessed 29 February 2020.</ref> compared the SF-12 to the SF-36 in treatments for congestive heart failure, sleep apnoea and inguinal hernia. The authors found that the SF-12 agreed with the MCS and PCS of the SF-36, noting that the scores recorded the same level of health and change over time.   


=== Responsiveness  ===
=== Responsiveness  ===


=== Miscellaneous  ===
=== Miscellaneous  ===
There are two versions of the SF-12 which have some differences in scoring so it is recommended that users document which version they are using.


== Resources  ==
== Resources  ==
*[https://www.hss.edu/physician-files/huang/SF12-RCH.pdf SF-12 Questionnaire]
*[https://www.hss.edu/physician-files/huang/SF12-RCH.pdf SF-12 Questionnaire]
*[https://www.orthotoolkit.com/sf-12/ Online caluculator]


== References  ==
== References  ==

Revision as of 01:15, 29 February 2020

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Objective[edit | edit source]

The SF-12 is a self-reported outcome measure assessing the impact of health on an individual's everyday life. It is often used as a quality of life measure.

The SF-12 is a shortened version of it's predecessor, the SF-36, which itself evolved from the Medical Outcomes Study[1]. The SF-12 was created to reduce the burden of response[2].

The SF-12 uses the same eight domains as the SF-36:

1) Limitations in physical activities because of health problems.

2) Limitations in social activities because of physical or emotional problems

3) Limitations in usual role activities because of physical health problems

4) Bodily pain

5) General mental health (psychological distress and well-being)

6) Limitations in usual role activities because of emotional problems

7) Vitality (energy and fatigue)

8) General health perceptions

Intended Population[edit | edit source]

Like the SF-36, the SF-12 is designed as a general measure of health so can be used with the general population

Method of Use[edit | edit source]

Patients fill out a 12 question survey which is then scored by a clinician or researcher.

Unlike the SF-36, the SF-12 is not available for free by its authors, due to a scoring programme. However, there is an online calculator here that uses the first version.

There is a scoring guide for both versions available here.

Evidence[edit | edit source]

Reliability[edit | edit source]

Validity[edit | edit source]

When compared to the SF-36 in various patient groups varying in age, physical and mental health, the SF-12 scores were similar to the SF-36 but almost always had bigger standard errors[3].

A separate study[4] compared the SF-12 to the SF-36 in treatments for congestive heart failure, sleep apnoea and inguinal hernia. The authors found that the SF-12 agreed with the MCS and PCS of the SF-36, noting that the scores recorded the same level of health and change over time.

Responsiveness[edit | edit source]

Miscellaneous[edit | edit source]

There are two versions of the SF-12 which have some differences in scoring so it is recommended that users document which version they are using.

Resources[edit | edit source]

References[edit | edit source]

  1. Ware J. SF-36 Health Survey Update. Spine. 2000. 25; 24: 3130-3139.
  2. Rand Health Care. 12-Item Short Form Survey (SF-12). Available from: https://www.rand.org/health-care/surveys_tools/mos/12-item-short-form.html. (Accessed 29 February 2020).
  3. Ware J, Kosinski M, Keller SD. A 12-Item Short-Form Health Survey: construction of scales and preliminary tests of reliability and validity. Med Care. 1996. 34; 3:220-33.
  4. Jenkinson C, Layte R, Jenkinson D, Lawrence K, Petersen S, Paice C, Stradling J. A shorter form health survey: can the SF-12 replicate results from the SF-36 in longitudinal studies? Journal of Public Health. 1997. 19; 2: 179-186. Accessed 29 February 2020.