Michael Robling | Cardiff University (original) (raw)

Papers by Michael Robling

Health and Quality of Life Outcomes, 2008

Background This article describes the development and validation of a self-reported questionnaire... more Background This article describes the development and validation of a self-reported questionnaire, the KQoL-26, that is based on the views of patients with a suspected ligamentous or meniscal injury of the knee that assesses the impact of their knee problem on the quality of their lives. Methods Patient interviews and focus groups were used to derive questionnaire content. The instrument was assessed for data quality, reliability, validity, and responsiveness using data from a randomised trial and patient survey about general practitioners' use of Magnetic Resonance Imaging for patients with a suspected ligamentous or meniscal injury. Results Interview and focus group data produced a 40-item questionnaire designed for self-completion. 559 trial patients and 323 survey patients responded to the questionnaire. Following principal components analysis and Rasch analysis, 26 items were found to contribute to three scales of knee-related quality of life: physical functioning, activity limitations, and emotional functioning. Item-total correlations ranged from 0.60–0.82. Cronbach's alpha and test retest reliability estimates were 0.91–0.94 and 0.80–0.93 respectively. Hypothesised correlations with the Lysholm Knee Scale, EQ-5D, SF-36 and knee symptom questions were evidence for construct validity. The instrument produced highly significant change scores for 65 trial patients indicating that their knee was a little or somewhat better at six months. The new instrument had higher effect sizes (range 0.86–1.13) and responsiveness statistics (range 1.50–2.13) than the EQ-5D and SF-36. Conclusion The KQoL-26 has good evidence for internal reliability, test-retest reliability, validity and responsiveness, and is recommended for use in randomised trials and other evaluative studies of patients with a suspected ligamentous or meniscal injury.

Patient Education and Counseling, 2003

Some instruments have been developed to evaluate 'decision effectiveness' such as the 'satisfacti... more Some instruments have been developed to evaluate 'decision effectiveness' such as the 'satisfaction with decision (SWD)' and 'decision conflict (DCS)' scales and are validated for the US context. Patients identify further outcome domains that are not fully covered in these scales. We developed a patient-based outcome measure to evaluate risk communication and decision making effectiveness, addressing these further domains and validated for use in the UK. Formulation of items was based on literature review and key informant interviews. The instrument was piloted and developed (including psychometric assessment) in the context of a trial of decision making and risk communication interventions in general practice. Patients were recruited to the trial with known atrial fibrillation, prostatism, menorrhagia or menopausal symptoms. High response rates (96% in first phase) indicated acceptability to patients. A 20 item patient-based outcome measure, with two sub-scales for 'risk communication' and 'confidence in decision', was produced. It allows for paternalistic, shared or informed choice decision making models. Usage in further studies will facilitate systematic reviews. Consequently, lessons for wider application of these interventions in practice, and policy implications regarding greater patient involvement should then be clearer. #

PURPOSE Poor nutrition is an increasing problem for economically deprived families, and mothers p... more PURPOSE Poor nutrition is an increasing problem for economically deprived families, and mothers play a key role in establishing children's diets. We explored mothers' understanding of health-promotion recommendations for healthy eating.

Health and Quality of Life Outcomes, 2008

Background This article describes the development and validation of a self-reported questionnaire... more Background This article describes the development and validation of a self-reported questionnaire, the KQoL-26, that is based on the views of patients with a suspected ligamentous or meniscal injury of the knee that assesses the impact of their knee problem on the quality of their lives. Methods Patient interviews and focus groups were used to derive questionnaire content. The instrument was assessed for data quality, reliability, validity, and responsiveness using data from a randomised trial and patient survey about general practitioners' use of Magnetic Resonance Imaging for patients with a suspected ligamentous or meniscal injury. Results Interview and focus group data produced a 40-item questionnaire designed for self-completion. 559 trial patients and 323 survey patients responded to the questionnaire. Following principal components analysis and Rasch analysis, 26 items were found to contribute to three scales of knee-related quality of life: physical functioning, activity limitations, and emotional functioning. Item-total correlations ranged from 0.60–0.82. Cronbach's alpha and test retest reliability estimates were 0.91–0.94 and 0.80–0.93 respectively. Hypothesised correlations with the Lysholm Knee Scale, EQ-5D, SF-36 and knee symptom questions were evidence for construct validity. The instrument produced highly significant change scores for 65 trial patients indicating that their knee was a little or somewhat better at six months. The new instrument had higher effect sizes (range 0.86–1.13) and responsiveness statistics (range 1.50–2.13) than the EQ-5D and SF-36. Conclusion The KQoL-26 has good evidence for internal reliability, test-retest reliability, validity and responsiveness, and is recommended for use in randomised trials and other evaluative studies of patients with a suspected ligamentous or meniscal injury.

Patient Education and Counseling, 2003

Some instruments have been developed to evaluate 'decision effectiveness' such as the 'satisfacti... more Some instruments have been developed to evaluate 'decision effectiveness' such as the 'satisfaction with decision (SWD)' and 'decision conflict (DCS)' scales and are validated for the US context. Patients identify further outcome domains that are not fully covered in these scales. We developed a patient-based outcome measure to evaluate risk communication and decision making effectiveness, addressing these further domains and validated for use in the UK. Formulation of items was based on literature review and key informant interviews. The instrument was piloted and developed (including psychometric assessment) in the context of a trial of decision making and risk communication interventions in general practice. Patients were recruited to the trial with known atrial fibrillation, prostatism, menorrhagia or menopausal symptoms. High response rates (96% in first phase) indicated acceptability to patients. A 20 item patient-based outcome measure, with two sub-scales for 'risk communication' and 'confidence in decision', was produced. It allows for paternalistic, shared or informed choice decision making models. Usage in further studies will facilitate systematic reviews. Consequently, lessons for wider application of these interventions in practice, and policy implications regarding greater patient involvement should then be clearer. #

PURPOSE Poor nutrition is an increasing problem for economically deprived families, and mothers p... more PURPOSE Poor nutrition is an increasing problem for economically deprived families, and mothers play a key role in establishing children's diets. We explored mothers' understanding of health-promotion recommendations for healthy eating.