Original Research| Volume 56, ISSUE 5, P1031-1035, September 2017

Comparison of Completion Rates for SF-36 Compared With SF-12 Quality of Life Surveys at a Tertiary Urban Wound Center


      Patient-reported outcome measures derived from quality of life instruments are an important tool in monitoring disease progression and treatment response. Although a number of validated instruments are available, the Short Form-36 (SF-36) quality of life survey is the most widely used. It is imperative that the patients answer all the questions in this instrument for appropriate analysis and interpretation. It has been hypothesized that fewer questions (i.e., the Short Form-12 [SF-12]), will result in greater survey completion rates. The present study was a randomized prospective study comparing the completion rates for the SF-36 and SF-12 quality of life surveys. Patients presenting with a chronic wound were asked to complete the SF-36 or SF-12 survey. After an a priori power analysis was performed, the completion rates, patterns of skipped questions, and demographic information were analyzed using t tests for continuous variables or Fisher's exact test for categorical variables and both multivariate linear regression and logistic regression. A total of 59 subjects (30 completed the SF-12 and 29 completed the SF-36) participated in the present study. The SF-12 group had an 80% (24 of 30) completion rate compared with a 55% (16 of 29) completion rate for the SF-36 group (p < .05). However, the length of the survey did not affect the completion rate nor was a statistically detectable pattern of skipped questions found. College graduates were more likely to complete both surveys compared with high school graduates (p < .07). Although it is unclear why, our study results indicate that the SF-12 yields a higher total survey completion rate. However, completion appears independent of the shorter survey length.

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        • Rubin R.R.
        • Peyrot M.
        Quality of life and diabetes.
        Diabetes Metab Res Rev. 1999; 15: 205-218
        • DCCT Research Group
        Reliability and validity of a diabetes quality-of-life measure for the diabetes control and complications trial (DCCT).
        Diabetes Care. 1988; 11: 725-732
        • Vileikyte L.
        • Peyrot M.
        • Bundy C.
        • Rubin R.R.
        • Leventhal H.
        • Mora P.
        • Shaw J.E.
        • Baker P.
        • Boulton A.J.
        The development and validation of a neuropathy- and foot ulcer-specific quality of life instrument.
        Diabetes Care. 2003; 26: 2549-2555
        • Abetz L.
        • Sutton M.
        • Brady L.
        • McNulty P.
        • Gagnon D.D.
        The Diabetic Foot Ulcer Scale (DFS): a quality of life instrument for use in clinical trials.
        Pract Diabetes Int. 2002; 19: 167-175
        • Paddock L.E.
        • Veloski J.
        • Chatterton M.L.
        • Gevirtz F.O.
        • Nash D.B.
        Development and validation of a questionnaire to evaluate patient satisfaction with diabetes disease management.
        Diabetes Care. 2000; 23: 951-956
        • Meadows K.A.
        • Abrams C.
        • Sandbaek A.
        Adaptation of the Diabetes Health Profile (DHP-1) for use with patients with type 2 diabetes mellitus: psychometric evaluation and cross-cultural comparison.
        Diabet Med. 2000; 17: 572-580
        • Tennvall G.R.
        • Apelqvist J.
        Health-related quality of life in patients with diabetes mellitus and foot ulcers.
        J Diabetes Complications. 2000; 14: 235-241
        • Burroughs T.E.
        • Desikan R.
        • Waterman B.M.
        • Gilin D.
        • McGill J.
        Development and validation of the diabetes quality of life brief clinical inventory.
        Diabetes Spectrum. 2004; 17: 41-49
        • Brazier J.E.
        • Harper R.
        • Jones N.M.
        • O'Cathain A.
        • Thomas K.J.
        • Usherwood T.
        • Westlake L.
        Validating the SF-36 health survey questionnaire: new outcome measure for primary care.
        BMJ. 1992; 305: 160-164
        • McHorney C.A.
        • Ware Jr., J.E.
        • Raczek A.E.
        The MOS 36-item short-form health survey (SF-36): II. Psychometric and clinical tests of validity in measuring physical and mental health constructs.
        Med Care. 1993; 31: 247-263
        • Ware Jr., J.E.
        SF-36 health survey update.
        Spine. 2000; 25: 3130-3139
        • Mühlan H.
        • Bullinger M.
        • Power M.
        • Schmidt S.
        Short forms of subjective quality of life assessments from cross-cultural studies for use in surveys with different populations.
        Clin Psychol Psychother. 2008; 15: 142-153
        • Aaronson N.K.
        • Acquadro C.
        • Alonso J.
        • Apolone G.
        • Bucquet D.
        • Bullinger M.
        • Bungay K.
        • Fukuhara S.
        • Gandek B.
        • Keller S.
        • Razavi D.
        International quality of life assessment (IQOLA) project.
        Qual Life Res. 1992; 1: 349-351
        • Jacobson A.M.
        • De Groot M.
        • Samson J.A.
        The evaluation of two measures of quality of life in patients with type I and type II diabetes.
        Diabetes Care. 1994; 17: 267-274
        • Ware J.E.
        • Keller S.D.
        • Kosinski M.
        SF-12: How to Score the SF-12 Physical and Mental Health Summary Scales.
        New England Medical Center Health Institute, Boston, MA1998
        • Ware J.E.
        • Kosinki M.
        • Turner-Bowker D.M.
        • Gandek B.
        Health Assessment Lab: How to Score Version 2.
        QualityMetric Incorporated, Lincoln, RI, and New England Medical Center Hospital, Boston, MA2005
        • Gandek B.
        • Ware J.E.
        • Aaronson N.K.
        • Apolone G.
        • Bjorner J.B.
        • Brazier J.E.
        • Bullinger M.
        • Kassa S.
        • Leplege A.
        • Prieto L.
        • Sullivan M.
        Cross-validation of item selection and scoring for the SF-12 health survey in nine countries: results from the IQOLA Project.
        J Clin Epidemiol. 1998; 51: 1171-1178
        • Wukich D.K.
        • Sambenedetto T.L.
        • Mota N.M.
        • Suder N.C.
        • Rosario B.L.
        Correlation of SF-36 and SF-12 component scores in patients with diabetic foot disease.
        J Foot Ankle Surg. 2016; 55: 693-696
        • Burchell B.
        • Marsh C.
        The effect of questionnaire length on survey response.
        Qual Quant. 1992; 26: 233-244
        • Bassili J.N.
        • Scott B.S.
        Response latency as a signal to question problems in survey research.
        Public Opin Q. 1996; 60: 390-399
        • Galesic M.
        • Bosnjak M.
        Effects of questionnaire length on participation and indicators of response quality in a web survey.
        Public Opin Q. 2009; 73: 349-360
        • Iglesias C.
        • Torgerson D.
        Does length of questionnaire matter? A randomised trial of response rates to a mailed questionnaire.
        J Health Serv Res Policy. 2000; 5: 219-221
        • Cook C.
        • Heath F.
        • Thompson R.L.
        A meta-analysis of response rates in web- or internet-based surveys.
        Educ Psychol Meas. 2000; 60: 821-836
        • Espelt A.
        • Borrell C.
        • Roskam A.J.
        • Rodriguez-Sanz M.
        • Stirbu I.
        • Dalmau-Bueno A.
        • Artnik B.
        Socioeconomic inequalities in diabetes mellitus across Europe at the beginning of the 21st century.
        Diabetologia. 2008; 51: 1971-1979
        • Wexler D.J.
        • Grant R.W.
        • Wittenberg E.
        • Bosch J.L.
        • Cagliero E.
        • Delahanty L.
        • Blais M.A.
        • Meigs J.B.
        Correlates of health-related quality of life in type 2 diabetes.
        Diabetologia. 2006; 49: 1489-1497