Measurement of quality of life in patients with lung cancer in multicenter trials of new therapies

Psychometric assessment of the lung cancer symptom scale

P. J. Hollen, Richard J. Gralla, M. G. Kris, C. Cox, C. P. Belani, S. M. Grunberg, J. Crawford, J. A. Neidhart

Research output: Contribution to journalArticle

161 Citations (Scopus)

Abstract

Background. This study continued the development and psychometric testing of the Lung Cancer Symptom Scale (LCSS), a disease- and site-specific instrument primarily measuring the physical and functional dimensions of quality of life for individuals with lung cancer. The instrument contains two scales, one for patients and a counterpart for health professionals as observers. Methods. Feasibility, reliability, construct validity, and criterion-related validity were evaluated with 207 patients with non-small cell lung cancer (NSCLC) from six cancer centers. Within an interview with an observer, patients completed part of a battery of instruments by self-report and were interviewed for the remaining measures. Observers also completed measures after the interview. Results. Feasibility, reliability, and validity were well supported for this lung cancer population. Feasibility was demonstrated by patient and staff compliance in completion at all six cancer centers. Internal consistency was good, with coefficient alphas of 0.82 for the patient scale and 0.75 for the observer scale. Construct validity was supported by: 1. contrasted groups approach: regression lines (with 95% confidence bands) were obtained between the Karnofsky performance scale (KPS) and each of the two LCSS scales; 2. as a refinement, relationship testing: significant correlations between the LCSS and KPS for each item (except hemoptysis for the patient scale); and 3. multitrait-multimethod approach: good reliability (alphas ranging from 0.75 to 0.93), good convergent validity for the two LCSS scales (r = 0.77), and a good discriminant validity pattern from the Brief Symptom Inventory (BSI). Criterion-related validity with relevant gold standard measures (American Thoracic Society Questionnaire [ATS] and McGill Pain questionnaire, KPS, Profiles of Mood States [POMS], and Sickness Impact Profile [SIP]) was supported with significant correlations (0.40-0.67 for the LCSS patient scale; 0.54-0.65 for the LCSS observer scale). Conclusions. These psychometric properties demonstrate that the LCSS patient and observer scales are feasible, reliable, and valid quality of life measures that are ready for research and clinical use with lung cancer populations.

Original languageEnglish (US)
Pages (from-to)2087-2098
Number of pages12
JournalCancer
Volume73
Issue number8
StatePublished - 1994
Externally publishedYes

Fingerprint

Psychometrics
Multicenter Studies
Lung Neoplasms
Quality of Life
Karnofsky Performance Status
Therapeutics
Reproducibility of Results
Sickness Impact Profile
Interviews
Hemoptysis
Pain Measurement
Patient Compliance
Non-Small Cell Lung Carcinoma
Self Report
Population
Neoplasms
Equipment and Supplies
Health
Research

Keywords

  • clinical trials
  • lung cancer
  • Lung Cancer Symptom Scale
  • psychometrics
  • quality of life
  • subjective measurement

ASJC Scopus subject areas

  • Cancer Research
  • Oncology

Cite this

Hollen, P. J., Gralla, R. J., Kris, M. G., Cox, C., Belani, C. P., Grunberg, S. M., ... Neidhart, J. A. (1994). Measurement of quality of life in patients with lung cancer in multicenter trials of new therapies: Psychometric assessment of the lung cancer symptom scale. Cancer, 73(8), 2087-2098.

Measurement of quality of life in patients with lung cancer in multicenter trials of new therapies : Psychometric assessment of the lung cancer symptom scale. / Hollen, P. J.; Gralla, Richard J.; Kris, M. G.; Cox, C.; Belani, C. P.; Grunberg, S. M.; Crawford, J.; Neidhart, J. A.

In: Cancer, Vol. 73, No. 8, 1994, p. 2087-2098.

Research output: Contribution to journalArticle

Hollen, PJ, Gralla, RJ, Kris, MG, Cox, C, Belani, CP, Grunberg, SM, Crawford, J & Neidhart, JA 1994, 'Measurement of quality of life in patients with lung cancer in multicenter trials of new therapies: Psychometric assessment of the lung cancer symptom scale', Cancer, vol. 73, no. 8, pp. 2087-2098.
Hollen, P. J. ; Gralla, Richard J. ; Kris, M. G. ; Cox, C. ; Belani, C. P. ; Grunberg, S. M. ; Crawford, J. ; Neidhart, J. A. / Measurement of quality of life in patients with lung cancer in multicenter trials of new therapies : Psychometric assessment of the lung cancer symptom scale. In: Cancer. 1994 ; Vol. 73, No. 8. pp. 2087-2098.
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abstract = "Background. This study continued the development and psychometric testing of the Lung Cancer Symptom Scale (LCSS), a disease- and site-specific instrument primarily measuring the physical and functional dimensions of quality of life for individuals with lung cancer. The instrument contains two scales, one for patients and a counterpart for health professionals as observers. Methods. Feasibility, reliability, construct validity, and criterion-related validity were evaluated with 207 patients with non-small cell lung cancer (NSCLC) from six cancer centers. Within an interview with an observer, patients completed part of a battery of instruments by self-report and were interviewed for the remaining measures. Observers also completed measures after the interview. Results. Feasibility, reliability, and validity were well supported for this lung cancer population. Feasibility was demonstrated by patient and staff compliance in completion at all six cancer centers. Internal consistency was good, with coefficient alphas of 0.82 for the patient scale and 0.75 for the observer scale. Construct validity was supported by: 1. contrasted groups approach: regression lines (with 95{\%} confidence bands) were obtained between the Karnofsky performance scale (KPS) and each of the two LCSS scales; 2. as a refinement, relationship testing: significant correlations between the LCSS and KPS for each item (except hemoptysis for the patient scale); and 3. multitrait-multimethod approach: good reliability (alphas ranging from 0.75 to 0.93), good convergent validity for the two LCSS scales (r = 0.77), and a good discriminant validity pattern from the Brief Symptom Inventory (BSI). Criterion-related validity with relevant gold standard measures (American Thoracic Society Questionnaire [ATS] and McGill Pain questionnaire, KPS, Profiles of Mood States [POMS], and Sickness Impact Profile [SIP]) was supported with significant correlations (0.40-0.67 for the LCSS patient scale; 0.54-0.65 for the LCSS observer scale). Conclusions. These psychometric properties demonstrate that the LCSS patient and observer scales are feasible, reliable, and valid quality of life measures that are ready for research and clinical use with lung cancer populations.",
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AU - Gralla, Richard J.

AU - Kris, M. G.

AU - Cox, C.

AU - Belani, C. P.

AU - Grunberg, S. M.

AU - Crawford, J.

AU - Neidhart, J. A.

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N2 - Background. This study continued the development and psychometric testing of the Lung Cancer Symptom Scale (LCSS), a disease- and site-specific instrument primarily measuring the physical and functional dimensions of quality of life for individuals with lung cancer. The instrument contains two scales, one for patients and a counterpart for health professionals as observers. Methods. Feasibility, reliability, construct validity, and criterion-related validity were evaluated with 207 patients with non-small cell lung cancer (NSCLC) from six cancer centers. Within an interview with an observer, patients completed part of a battery of instruments by self-report and were interviewed for the remaining measures. Observers also completed measures after the interview. Results. Feasibility, reliability, and validity were well supported for this lung cancer population. Feasibility was demonstrated by patient and staff compliance in completion at all six cancer centers. Internal consistency was good, with coefficient alphas of 0.82 for the patient scale and 0.75 for the observer scale. Construct validity was supported by: 1. contrasted groups approach: regression lines (with 95% confidence bands) were obtained between the Karnofsky performance scale (KPS) and each of the two LCSS scales; 2. as a refinement, relationship testing: significant correlations between the LCSS and KPS for each item (except hemoptysis for the patient scale); and 3. multitrait-multimethod approach: good reliability (alphas ranging from 0.75 to 0.93), good convergent validity for the two LCSS scales (r = 0.77), and a good discriminant validity pattern from the Brief Symptom Inventory (BSI). Criterion-related validity with relevant gold standard measures (American Thoracic Society Questionnaire [ATS] and McGill Pain questionnaire, KPS, Profiles of Mood States [POMS], and Sickness Impact Profile [SIP]) was supported with significant correlations (0.40-0.67 for the LCSS patient scale; 0.54-0.65 for the LCSS observer scale). Conclusions. These psychometric properties demonstrate that the LCSS patient and observer scales are feasible, reliable, and valid quality of life measures that are ready for research and clinical use with lung cancer populations.

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