Development of a Short Instrument for Measuring Health-Related Quality of Life in Oncological Patients for Clinical Use: Protocol for an Observational Study

Evaluation of a short instrument for measuring health-related quality of life in oncological patients in routine care (HELP-6): an observational study

Purpose

Patient-reported outcomes have not been sufficiently implemented into the routine care of cancer patients because the existing instruments are often too long and complex or not cancer-specific. The aim of this study is the determination of psychometric properties and item reduction of a newly developed health-related quality of life (HrQoL) questionnaire for use in oncological clinical routines.

Methods

This observational study with a repeated measurements design included oncological inpatients and outpatients. A total of 630 patients participated at the first point of measurement and 404 at the second point of measurement. To evaluate the instrument, we conducted hierarchical confirmative factor analyses and for further validation correlated the resulting factors with standardized and validated HrQoL measurements. Test-retest reliability and responsiveness to change were tested.

Results

The developed questionnaire "HELP-6" ("Hamburg Inventory for Measuring Quality of Life in Oncological Patients") has a six-factor structure and has moderate-to-good convergent validity (r= -0.25 --0.68). Test-retest reliability was moderate-to-good (r =0.56-0.81, p < 0.001). Indications for responsiveness to change were found for three dimensions. The final version of the questionnaire HELP-6 has six dimensions with one item each.

Conclusion

With the HELP-6 instrument for measuring HrQoL in cancer patients, we provide a short and practical patient-reported outcome instrument. Though responsiveness to change could not be confirmed for all dimensions in this study, the HELP-6 includes time-efficient completion and evaluation and is informative in relevant HrQoL dimensions of cancer patients. Therefore, the HELP-6 poses an important addition to inpatient and outpatient routine cancer care.

Trial registration

This study was registered at Open Science Framework (https://osf.io/y7xce/), on 9 June 2018.

Identification and Determination of Dimensions of Health-Related Quality of Life for Cancer Patients in Routine Care - A Qualitative Study

Purpose

Continuous patient-reported outcomes (PROs) to identify and address patients’ needs represent an important addition to current routine care. The aim of this study was to identify and determine important dimensions of health-related quality of life (HrQoL) in routine oncological care.

Methods

In a cross-sectional qualitative study, interviews and focus groups were carried out and recorded. The interviewees were asked for their evaluation on HrQoL in general and specifically regarding cancer treatment. The material was transcribed and analyzed using qualitative content analysis based on Mayring. The results were reviewed in an expert discussion.

Results

Interviews with patients (N = 28) and clinicians (N = 4), as well as five focus groups with clinicians (N = 18) were conducted. Initially, nine deductive and two inductive categories on HrQoL were built. Four categories (partnership/sexuality, spirituality/religiousness, health perception, and overall health) were excluded following the qualitative content analysis because they were hardly or not at all mentioned by participants. Following on from the analysis of the expert discussion, one dimension was added (dignity), and two further categories were excluded (mobility and feeling of security in treatment). The resulting system consisted of six dimensions: emotional health, physical ailments, autonomy, social functionality, dignity, and resources.

Conclusion

The identified dimensions of HrQoL in routine oncological care were found to differ from those used in existing HrQoL measurements for (cancer) patients. Further research is needed to test and evaluate the presented structure in a larger sample of cancer patients to further assess its psychometric properties.