The short form 36 health survey is a 36item, patientreported survey of patient health. However, missing items are likely to occur in any study that collects data by selfadministration. The sf12v2 consists of two normalized composite scores. Item missing data is not uncommon in selfreport surveys. Only rows that are correct are used for calculating the sf12 t scores.
Use of the sf12 instrument for measuring the health of. The optum sf12v2 health survey is a shorter version of the sf36v2 health. Scales contributing to the scoring of the summary measures to a lesser degree are indicated by a dotted line. For example, sf12 physical health summary scores and sf12 mental health.
The national health measurement study nhms university of wisconsinmadison department of population health sciences madison, wi july 2008 nhms documents available. In practice, however, our analyses and comparisons with other utah survey results indicate that its inclusion had a negligible effect on the data distribution and on sf 12 summary scale values. Assessment of reliability and validity of sf12v2 among a diabetic. The sf 12 was designed to measure general health status from the patients point of view. Larson co, schlundt d, patel k, beard k, hargreaves m. The sf12 was designed to measure general health status from the patients point of view. The sf6d provides a means for using the sf36 and sf12 in economic evaluation by estimating a preferencebased single index measure for health from these data using general population values. The sf12 is a multipurpose short form survey with 12 questions, all selected from the sf36 health survey ware, kosinski, and keller, 1996.
The data for the kdqol36 were extracted from the kdqolshort form. The resulting shortform survey instrument provides a solution to the problem faced by many investigators who must restrict survey length. The sf20 is a set of generic, coherent, and easily administered qualityoflife measures. Two summary measures can be calculated using us or jp reference populations. Normative data of the sf12 health survey with validation. A generic, multipurpose shortform survey with 12 questions selected from the sf36 health survey which, when combined, scored and weighted, results in two scales of mental and physical functioning and overall healthrelated quality of life. This study derives new summary scores based directly on sf12v2 data from a recent u.
Pdf assessing the reliability of the short form 12 sf12 health. Purpose summary scores for the sf 12, version 2 sf 12v2 health status measure are based on scoring coefficients derived for version 1 of the sf 36, despite changes in item wording and response scales and despite the fact that sf 12 scales only contain a subset of sf 36 items. In practice, however, our analyses and comparisons with other utah survey results indicate that its inclusion had a negligible effect on the data distribution and on sf12 summary scale values. The mental component of the shortform 12 health survey sf. Assessment of psychometric properties of the korean sf12 v2. The sf36v2 and sf12v2 health surveys in new zealand. The sf 12 items themselves are not included in the calculation of any epic domain scores. The 12item medical outcomes study short form health. You are welcome to subscribe to email updates, or add your sasblog to the site. If memory serves, fred wolfe had an early hand in the matter. Also, i think there are differences in scoring for sf 12 and sf 12v2 so you need to ensure that you are scoring the right version. Most patients can complete the sf12 in less than 3 minutes without assistance. There are 3 steps involved in calculating the sf12 physical component summary pcs and mental component.
The sf12, which stands for shortform 12question, is a brief inventory of selfreported mental and physical health. This information will help keep track of how you feel and how well you are able to do your usual activities. Imputing the physical and mental summary scores pcs and mcs for the mos sf 36 and the veterans sf 36 health survey in the presence of missing data. For ease of reference, scoring instructions for the sf 12 are provided in the appendix below. Imputing the physical and mental summary scores pcs and mcs. Deriving sf12v2 physical and mental health summary scores. Imputing the physical and mental summary scores pcs and.
It is particularly useful in large population health surveys or for applications that combine a generic and diseasespecific health survey. Aug 03, 2012 12 item short form survey sf 12 questionnaire in a cohort of aian people using two different known and recognized scoring methods, 1 the standard sf 12 scoring developed by ware and 2 the alternative method of scoring, rand 12. This article is published with open access at abstract. One hundred and twelve individuals participated in this study. Scoring instructions for the university of michigan. Construct validity of the sf12 among american indian and. For this questionnaire, i will provide you a list of words that describe some of the different qualities of pain and related symptoms. Summary scores for the sf12, version 2 sf12v2 health status measure are based on scoring coefficients derived for version 1 of the sf36, despite changes in item wording and response scales and despite the fact that sf12 scales only contain a subset of sf36 items. Most patients can complete the sf 12 in less than 3 minutes without assistance.
The sf6d allows the analyst to obtain quality adjusted life years qalys from the sf36 for use in cost utility analysis. Therefore, the aim of our study was to evaluate the psychometric properties of the korean version of the sf12 v2 in the general population and to provide sf12 v2 domain scores according to the general characteristics of the study population. August 8, 2018 page 1 of 9 calculating physical and mental health summary scores for promis29 v2. How to score the sf12 physical and mental health summary scales find, read and cite all the research you need on researchgate. To evaluate the construct validity of the short form 12 item survey sf 12 among users of a homeless day shelter. Benchmarks for interpretation of score differences on the sf36 health survey for patients with diabetes. Sf36 scoring guidelines the sf36 currently generates eight dimension scores and two summary scores p. The sf12 items themselves are not included in the calculation of any epic domain scores. The mental component of the shortform 12 health survey. The sf12v2 is a healthrelated qualityoflife questionnaire. Validity of the sf12 for use in a lowincome african american communitybased research initiative reach 2010. Imputation of sf12 health scores for respondents with. How to score the sf12 physical and mental health summary scales.
Answer every question by selecting the answer as indicated. During the past 4 weeks, were you limited in the kind of work you do or other regular activities as a result of any emotional problems such as feeling depressed or anxious. Jan 30, 2008 to assess how well the sf 36, a wellvalidated generic quality of life qol instrument, compares with its shorter adaptation, the sf 12, in capturing differences in qol among patients with and without obesity. Sf12 health survey scoring demonstration this survey asks for your views about your health. Scoring the auasi and sf12 scoring the aua symptom index.
It is because of this inherent variation sf12 scores have over the lifespan that it is. To aid interpretation, normbased scoring has been introduced for the sf36, setting the general population mean. Comparing the sf12 and sf36 health status questionnaires in. The national health measurement study nhms university of.
Normative data of the sf12 health survey with validation using postmyocardial infarction patients in the dutch population floortje mols. A random sample of the general population aged 18 years and over living in tehran, iran completed the instrument. The sf 6d scoring programmes have recently been revised primarily in order to more accurately deal with missing sf 36 sf 12 item level data. Stata module to validate sf12 input and calculate sf12. The table below summarises the issues raised by the revisions, the decisions implemented. Sf12 health survey this survey asks for your views about your health. To assess how well the sf36, a wellvalidated generic quality of life qol instrument, compares with its shorter adaptation, the sf12, in capturing differences in qol among patients with and without obesity. The psychometric properties of the korean short form12 health survey, version 2 sf12 v2 have not been assessed in the general population. If you are unsure how to answer a question, please give the best answer you can. Sf health surveys sf 12 qualitymetrics sf health surveys capture practical, reliable, and valid information about functional health and wellbeing from the patients point of view. The sum of the raw values for items 3541 provides the total aua symptom score. We followed the method described in the sf12v2 manual to compute the score for each.
Assessment of psychometric properties of the korean sf12. We followed the method described in the sf12v2 manual to compute the. Original research validity of the sf12 for use in a low. The health outcomes technologies program, health services. Benchmarks for interpretation of score differences on the. The 12item medical outcomes study short form health survey. How to score version 2 of the sf12 health survey with a supplement documenting version 1 author. The modified version of the sf12 york sf12 converted the stem and leaf format of some questions to individual items. Medical outcomes survey mos measures of quality of life. The sf12 appears to be a valid measure for assessing health status of lowincome african americans. Several studies re ported a consistent bias for lower sf36 and sf12 scores.
Validity of the sf 12 for use in a lowincome african american communitybased research initiative reach 2010 original research suggested citation for this article. For ease of reference, scoring instructions for the sf12 are provided in the appendix below. A generic, multipurpose shortform survey with 12 questions selected from the sf 36 health survey which, when combined, scored and weighted, results in two scales of mental and physical functioning and overall healthrelated quality of life. The sf 12v2 is the improved version of the sf 12v1. Proceedings of the 22nd annual sas users group international conference. To evaluate the construct validity of the short form 12item survey sf12 among users of a homeless day shelter. The sf36 is a measure of health status and an abbreviated variant of it, the sf6d, is commonly used in health economics as a variable in the qualityadjusted life year calculation to determine the costeffectiveness of a health treatment. Stata to sas code conversion for scoring sf12 mental health assessment. To provide new zealand population norms for version 2 of the sf36 and sf12 health surveys and report scoring coefficients that enable the construction of physical and mental component.
We focus on the mental summary measure of the sf12, which has been obtained following two already available scoring methods. The medical outcomes study mos measures of quality of life core survey was a twoyear study of patients with chronic conditions. The sf 6d allows the analyst to obtain quality adjusted life years qalys from the sf 36 for use in cost utility analysis. The psychometric properties of the korean short form 12 health survey, version 2 sf 12 v2 have not been assessed in the general population. The sf 12 is a multipurpose short form survey with 12 questions, all selected from the sf 36 health survey ware, kosinski, and keller, 1996. How to score the sf12 physical and mental health summary scales ware, john e on. Scoring and population norms sph boston university. We compared the correlation between the physical pcs and mental mcs component summary measures of the sf 12 and sf 36 among 356 primary care patients using pearson coefficients r. Coefficients between scales and summary scores of sf12 in win participants. We compared the correlation between the physical pcs and mental mcs component summary measures of the sf12 and sf36 among 356 primary care patients using pearson. The sf 12 has a different scoring protocol to the sf 36.
Jan 22, 2010 summary scores for the sf 12, version 2 sf 12v2 health status measure are based on scoring coefficients derived for version 1 of the sf 36, despite changes in item wording and response scales and despite the fact that sf 12 scales only contain a subset of sf 36 items. We assessed the effect of the two types of questionnaires on item response rates. How to score version 2 of the sf12 health survey with a. Stata to sas code conversion for scoring sf12 mental. Interpreting the sf12 the results for this report are based on the responses of 7,520 respondents in the 2001 utah health status survey hss. The table below summarises the issues raised by the revisions, the decisions implemented in the scoring programmes and the benefit to the user. Mental component score mcs from the veterans sf12 health survey in the context of missing data. Calculating physical and mental health summary scores for. As the survey uses normbased scoring, comparisons can be made among. The sf 6d provides a means for using the sf 36 and sf 12 in economic evaluation by estimating a preferencebased single index measure for health from these data using general population values. Kosinskiusing the sf12 health status measure to improve predictions.
Imputing physical and mental summary scores health outcomes. Stata to sas code conversion for scoring sf 12 mental health assessment. Assessing the reliability of the short form 12 sf12 health survey in. Have the network administrator disable the uac for the health outcomes scoring software and the following registry key.
The standard sf 12 scoring algorithm, however, is a weighted sum of the sf 12 items and requires answers to all 12 individual items in order to calculate pcs and mcs summary scores. The instrument was designed to reduce respondent burden while achieving minimum standards of precision for purposes of group comparisons involving multiple health dimensions. Therefore, the aim of our study was to evaluate the psychometric properties of the korean version of the sf 12 v2 in the general population and to provide sf 12 v2 domain scores according to the general characteristics of the study population. Reliability was estimated using internal consistency and validity was assessed using knowngroups comparison and convergent validity. Validity of the sf 12 for use in a lowincome african american communitybased research initiative reach 2010.
Purpose summary scores for the sf12, version 2 sf12v2 health status measure are based on scoring coefficients derived for version 1 of the sf36, despite changes in item wording and response scales and despite the fact that sf12 scales only contain a subset of. They are also called generic health surveys because they can be used across age, disease, and treatment group, and are appropriate for a wide variety of. I would like to include the pcs and mcs from the sf 12, but i want to confirm that the way these scores were calculated is correct. This book chapter summarizes thesteps in the construction of the sf36. The sf36 questionnaire is a general health questionnaire distributed by qualitymetric. To provide new zealand population norms for version 2 of the sf 36 and sf 12 health surveys and report scoring coefficients that enable the construction of physical and mental component summary scores from new zealand sf 36v2 and sf 12v2 data. I am working on my masters thesis using an existing dataset. The sf 12, which stands for shortform 12 question, is a brief inventory of selfreported mental and physical health. Shortform mcgill pain questionnaire 2 sf mpq2 date. This study derives new summary scores based directly on sf 12v2 data from a recent u. Updated and complete report july 2004 technical report prepared by.
Validity of the sf12 for use in a lowincome african american communitybased research initiative reach 2010 original research suggested citation for this article. Please rate the intensity of each of the pain and related symptoms you felt during the past week on 0. Scores for each of the 6 domains in part 1 are com. Both physical and mental health composite scales combine the 12 items in. Pros brevity, ease of scoring, high retest reliability. The scoring of pcs and mcs is based on weights derived from the vr36 administered to 1. The standard sf12 scoring algorithm, however, is a weighted sum of the sf12 items and requires answers to all 12 individual items in order to calculate pcs and mcs summary scores. This information will help you keep track of how you feel and how well you are able to do your usual activities. Sf12 scores were recoded, standardised to a 0100 scale and, using a syntax included in the sf12 manual, summarised into two summary scores 42 further for efficacy, at t0 and t2 labour experts filled out the participation ladder 44, a dutch scale for grading the level of client participation 44. The standard form, with a recall period of 4 weeks in most of the items but three, was administered to all respondents.
I would like to include the pcs and mcs from the sf12, but i want to confirm that the way these scores were calculated is correct. Noncoverage bias could be reduced by combining a stratified residential. Adding brief health assessments has potential to provide information regarding the effect that programs have upon the health status and functioning of homeless persons. Interpreting the sf 12 the results for this report are based on the responses of 7,520 respondents in the 2001 utah health status survey hss. Please rate the intensity of each of the pain and related symptoms you felt during the past week on 0 to 10 scale, with 0 being no. It was developed for the medical outcomes study mos, a multiyear study of patients with chronic conditions. Sf 12 health survey scoring demonstration this survey asks for your views about your health. The sf6d scoring programmes have recently been revised primarily in order to more accurately deal with missing sf36sf12 item level data. The shortform36 health survey 1 excerpt from ian mcdowell, measuring health. The main objective of this manual is to document and explain each step in the scoring of sf12v2 scales and summary measures using normbased scoring nbs algorithms. Algorithms are presented for the mos sf36, this report provides the. Comparing the sf12 and sf36 health status questionnaires. Of the 149 items that were administered to the panel patients in the study, the mos investigators determined 116 items to be the core set that defined a comprehensive battery of functioning and wellbeing indicators.