Outcome Measurement Research


Richard Siegert

Phone: +64 9 921 9999 Ext 7885

Email: richard.siegert@aut.ac.nz


PCRC's purpose is to produce and promote high quality research enhancing knowledge in disability, rehabilitation and diversity. The Outcomes Cluster has a major focus on Outcomes that matter – Addressing meaning and measurement. We aim to enhance the evaluation of rehabilitation and health outcomes through measurement development, measurement sciences, education, consultancy and community engagement.


  1. Further the science of outcomes measurement through methodological research
  2. Explore the underlying concepts of measurement domains (e.g. what matters most to
    patients, clinicians, service providers, insurance companies, the Ministry)
  3. To develop robust measures of process, outcome and quality of life in health and
    rehabilitation (applied research)
  4. Build research capacity (courses, postgraduate education, undergraduate and
    postgraduate students)
  5. Support clinicians and service leads in the use and interpretation of their
    outcomes data (consultancy, joint projects, outcomes network)
  6. Consolidate existing and develop new (inter)national research collaborations

Associated Publications:



Journal Articles

Rudkin, E., Medvedev, O. & Siegert, R.J. (2017). The Five-Facet Mindfulness Questionnaire: Why the Observing Facet does not Predict Psychological Symptoms.MindfulnessPub online July 7 2017.

Ramsenthaler, C., Gao, W. Siegert, R. J., Schey, S. A., Edmonds, P. M., & Higginson, I. J. (2017). Longitudinal validity and reliability of the Myeloma Patients Outcome Scale (MyPOS) was established using traditional, generalizability and Rasch psychometric methods. Quality of Life Research, online July 27,

Snell, D, Surgenor, L, Hay-Smith, J, Martin, R, & Siegert RJ (2017). What’s wrong with me? Seeking a coherent understanding of recovery after mild traumatic brain injury. Disability and Rehabilitation, 39(19), 1968-1975.

Wang G Y, Taylor T, Sumich A, Merien F, Borotkanics R, Wrapson W, Krägeloh C, Siegert RJ . (2017). Associations between immunological function and memory recall in healthy adults. Brain and Cognition, 119, 39-44.

Medvedev, O, Krägeloh, C.U., Narayanan, A., & Siegert, R.J. (2017). Measuring Mindfulness:   Applying Generalizability Theory to Distinguish between State and Trait. Mindfulness,8, 1036-1046.

Paterson, J., Medvedev, O., Sumich, A., Tautolo, E., Krägeloh, C., Sisk, R., McNamara, R., Berk, M., Narayanan, A., & Siegert, RJ. (2017). Distinguishing transient versus stable aspects of depression in New Zealand Pacific Island children using Generalizability Theory. Journal of Affective Disorders.

Spinou, Arietta, Siegert, RJ, Guan, Wei-jie, Patel, Amit, Gosker, Harry, Lee, Kai, Elston, Caroline; Loebinger, Michael, Wilson, Robert; Garrod, Rachel, Birring, Surinder. (2017), 49: 1601532. The development and validation of the Bronchiectasis Health Questionnaire (BHQ) (in press). European Respiratory Journal.

Krägeloh, C.U, Bergomi, C. Siegert, R.J. & Medvedev, O. N. (2017). Response shift after a mindfulness-based intervention: Measurement invariance testing of the Comprehensive Inventory of Mindfulness Experiences. Mindfulness. DOI 10.1007/s12671-017-0764-4 Pub online July 7 2017.

Clark, H, Bassett, S. & Siegert, R.J. (2017). Validation of a comprehensive measure of clinic-based adherence for physiotherapy patients. Physiotherapy.

Medvedev, O. N., Krägeloh, C. U., Hill, E. M., Billington, D. R., Siegert, R. J., Webster, C. S., Booth, R. J., & Henning, M. A. (2017). Rasch analysis of the Perceived Stress Scale: Transformation from an ordinal to a linear measure. Journal of Health Psychology.

Medvedev, O. N., Siegert, R. J., Kersten, P., & Krägeloh, C.U. (2017). Improving the precision of the Five Facet Mindfulness Questionnaire Using a Rasch approach. Mindfulness, 8, 995-1008,

Mitchell-Parker, K., Medvedev, O. N., & Siegert, R. J. (2017). Rasch analysis of the Frost Multidimensional Perfectionism Scale. Australian Journal of Psychology.

Medvedev, O. N., Siegert, R. J., Mohamed, A. D., Shepherd, D., Landhuis, E., & Krägeloh, C. U. (in press). The Oxford Happiness Questionnaire: Transformation from an ordinal to an interval measure using Rasch analysis. Journal of Happiness Studies



Journal Articles

Moens, K.,Siegert, R. J., Taylor, S., Namisango, E., & Harding, R. (2015). Symptom clusters in people living with HIV attending five sub-Saharan African palliative care facilities: a hierarchical cluster analysis. PloS One, May 2015

Medvedev, O.,Siegert, R. J., Billington, R.,Jang, Y., Feng, J., &Krageloh, C. (2015). How to improve the precision of the Mindful Attention Awareness Scale using a Rasch model. Mindfulness, 2016(7), 384-395

Osborne, T., Ramsenthaler, C., Schey, S.,Siegert, R. J., Edmonds, P., & Higginson, I. J. (2015). Improving the assessment of quality of life in the clinical care of myeloma patients: The development of the Myeloma Patient Outcome Questionnaire (MyPOS). BMC Cancer, 15(280)

Krageloh, C., Czuba, K., Billington, R., Siegert, R. J., Kersten, P. (2015). Using feedback from patient-reported outcome measures in mental health services: A scoping study and typology. Psychiatric Services, 66(3), 224-241

Elder H,Kersten P(2015). Whakawhiti korero, a method for the development of a cultural assessment tool, Te Waka Kuaka in Maori traumatic brain injury. Behavioural Neurology. 2015 (Article ID 137402)

Krageloh, C., & Shepherd, G. (2015). Quality of life of community-dwelling retirement-aged New Zealanders: The effects of volunteering, income, and being part of a religious community. Voluntas: International Journal of Voluntary and Nonprofit Organizations, 26(6), 2462-2478

Krageloh, C., Henning, M. A.,Billington, R., & Hawken, S. J. (2015). The relationship between quality of life and spirituality, religiousness, and personal beliefs of medical students. Academic Psychiatry, 39(1), 85-89

Czuba, K., Kersten, P., Smith, G., Barker-Collo, S., Taylor, W., McPherson, K.M. (2015). Measuring neurobehavioral functioning in people with traumatic brain injury: Rasch analysis of Neurobehavioral Functioning Inventory. Journal of Head Trauma Rehabilitation.

Olds, M., Ellis, R., Donaldson, K., & Kersten, P. (2015). Risk factors which predispose first-time anterior traumatic shoulder dislocations to recurrent instability in adults: A systematic review and meta-analysis. British Journal of Sports Medicine, Early online

Levack, W. M. M., Weatherall, M., Hay-Smith, E. J. C., Dean, S.,McPherson, K. M., &Siegert, R. J.(2015). Goal setting and strategies to enhance goal pursuit for adults with acquired disability participating in rehabilitation. Cochrane Database of Systematic Reviews, 2014(8).

Nunnerley, J., Dunn, J., McPherson, K.M., Hooper, G., Woodfield, T. (2015). Return to work for severely injured survivors of the Christchurch earthquake: influences in the first 2 years. Disability & Rehabilitation. Early online.

Mudge, S., Rewi, D., &Channon, A.(2015). Identifying an outcome measure to assess the impact of Mobility Dogs. Disability and Rehabilitation: Assistive Technology, 1-11.

Kersten, P., Czuba, K., McPherson,

K. M., Dudley, M., Elder, H., Tauroa, R., & Vandal, A. (2015). A systematic review of evidence for the psychometric properties of the Strengths and Difficulties Questionnaire. International Journal of Behavioral Development