Deriving summary indices of health status from the Amyotrophic Lateral Sclerosis Assessment Questionnaires (ALSAQ-40 and ALSAQ-5). by Jenkinson, C, Norquist, J, Fitzpatrick, R

Health-related quality of life in amyotrophic lateral sclerosis: determining a meaningful deterioration. by Norquist, J, Fitzpatrick, R, Jenkinson, C

Rasch measurement in the assessment of amytrophic lateral sclerosis patients. by Norquist, J, Fitzpatrick, R, Jenkinson, C

Distribution-based criteria for change in health-related quality of life in Parkinson's disease. by Fitzpatrick, R, Norquist, J, Jenkinson, C

Comparing alternative Rasch-based methods vs raw scores in measuring change in health. by Norquist, J, Fitzpatrick, R, Dawson, J, Jenkinson, C

Factors which predict physical and mental health status in patients with amyotrophic lateral sclerosis over time. by Norquist, J, Jenkinson, C, Fitzpatrick, R, Swash, M

Rasch scoring of outcomes of total hip replacement. by Fitzpatrick, R, Norquist, J, Dawson, J, Jenkinson, C

Cross-cultural evaluation of the Parkinson's Disease Questionnaire: tests of data quality, score reliability, response rate, and scaling assumptions in the United States, Canada, J... by Jenkinson, C, Fitzpatrick, R, Norquist, J, Findley, L, Hughes, K

Equity and need when waiting for total hip replacement surgery. by Fitzpatrick, R, Norquist, J, Reeves, B, Morris, R, Murray, D, Gregg, P

A comparison of Rasch with Likert scoring to discriminate between patients' evaluations of total hip replacement surgery. by Fitzpatrick, R, Norquist, J, Jenkinson, C, Reeves, B, Morris, R, Murray, D, Gregg, P