Refining the measurement of psychological adjustment in cancer

Abstract We describe five phases of research designed to refine the psychometric properties of the PAC, a measure of psychological adjustment in cancer patients. PAC items were originally generated by modification of an existing diabetes instrument, and item discrimination examined differences between 91 cancer patients and 173 age-matched patients with diabetes. Cancer was considerably more stressful than diabetes but patients reported a similar range of qualitative responses. Focus group techniques were used to further refine the item set. A series of analyses in different samples identified six relatively stable factors and a Cronbach's alpha of 0.74-0.86. The test-retest correlation for the total PAC score was 0.92, and convergent validity was shown by a consistent pattern of association with criterion measures. In a randomised controlled trial, total PAC scores were shown to be sensitive to experimental manipulations of the medium, message, and context of cancer terminology. A factor replication stud...

[1]  P. Butow,et al.  Cancer by another name: a randomized trial of the effects of euphemism and uncertainty in communicating with cancer patients. , 1993, Journal of clinical oncology : official journal of the American Society of Clinical Oncology.

[2]  J. Weinman,et al.  Measuring coping in breast cancer. , 1992, Journal of psychosomatic research.

[3]  P. Butow,et al.  On the receiving end. IV: Validation of quality of life indicators. , 1991, Annals of oncology : official journal of the European Society for Medical Oncology.

[4]  R. Stuart-Harris,et al.  Identifying priorities of psychosocial need in cancer patients. , 1990, British Journal of Cancer.

[5]  F. Walkey,et al.  The replicable dimensions of the Beck Depression Inventory. , 1990, Journal of clinical psychology.

[6]  Pomare Ew,et al.  Functional gastrointestinal symptoms in a Wellington community sample. , 1990 .

[7]  R. Elashoff,et al.  A structured psychiatric intervention for cancer patients. II. Changes over time in immunological measures. , 1990, Archives of general psychiatry.

[8]  G. Mellsop,et al.  Adverse learning strategy: the Adelaide Diagnostic Learning Inventory and its subscale replicability in a medical student population , 1990, Medical Education.

[9]  H. Kraemer,et al.  EFFECT OF PSYCHOSOCIAL TREATMENT ON SURVIVAL OF PATIENTS WITH METASTATIC BREAST CANCER , 1989, The Lancet.

[10]  D. Tritchler,et al.  Cancer Patients: Their Desire for Information and Participation in Treatment Decisions , 1989, Journal of the Royal Society of Medicine.

[11]  M. Watson,et al.  Development of a questionnaire measure of adjustment to cancer: the MAC scale , 1988, Psychological Medicine.

[12]  C. Basch.  Focus Group Interview: An Underutilized Research Technique for Improving Theory and Practice in Health Education , 1987, Health education quarterly.

[13]  R. Siegert,et al.  Multiple replication of the factor structure of the inventory of socially supportive behaviors , 1987 .

[14]  R. Siegert,et al.  An examination of reported factor structures of the general health questionnaire and the identification of a stable replicable structure , 1987 .

[15]  J. Turtle,et al.  Measurement of Emotional Adjustment in Diabetic Patients: Validity and Reliability of ATT39 , 1986, Diabetes Care.

[16]  A McMurray,et al.  Measuring the quality of life of cancer patients: the Functional Living Index-Cancer: development and validation. , 1984, Journal of clinical oncology : official journal of the American Society of Clinical Oncology.

[17]  R. Snaith,et al.  The Hospital Anxiety And Depression Scale , 2003, Health and quality of life outcomes.

[18]  S. Greer,et al.  Psychological concomitants of cancer: current state of research , 1982, Psychological Medicine.

[19]  D. Spiegel,et al.  Group Support for Patients With Metastatic Cancer: A Randomized Prospective Outcome Study , 1981 .

[20]  B. Cassileth,et al.  Information and participation preferences among cancer patients. , 1980, Annals of internal medicine.

[21]  R. Cattell,et al.  Factor Matching Procedures: an Improvement of the s Index; with Tables , 1969 .

[22]  Raymond B. Cattell,et al.  Handbook of multivariate experimental psychology , 1968 .

[23]  J. Turtle,et al.  Knowledge and attitude change as predictors of metabolic improvement in diabetes education. , 1990, Social science & medicine.

[24]  C. Burgess,et al.  Psychological response to cancer diagnosis--II. Evidence for coping styles (coping styles and cancer diagnosis). , 1988, Journal of psychosomatic research.

[25]  T. Revenson,et al.  Stress and coping in the explanation of psychological adjustment among chronically ill adults. , 1984, Social science & medicine.

[26]  K. Pettingale.  Coping and cancer prognosis. , 1984, Journal of psychosomatic research.