Evaluation of the Effects of a Psychosocial Intervention on Mood, Coping and Quality of Life in Cancer Patients
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Evaluation of the effects of a psychosocial intervention on mood, coping and quality of life in cancer patients Nicola Reavley BSc (Hons) Pharmacology Bristol University, UK Submitted in fulfilment of the requirements for the Doctor of Philosophy, Faculty of Life and Social Sciences, Swinburne University of Technology 2006 Acknowledgements Many people have provided me with very valuable assistance, guidance and support during the time taken to do this research. I wish to thank my supervisors, particularly Professor Avni Sali, without whom I would not have started and Dr Julie Pallant without whom I would not have finished. Professor Sali’s vision, encouragement and positive attitude have been an inspiration, and Dr Pallant’s support, clarity and attention to detail have been invaluable. My thanks go to Dr Ian Gawler and Dr Ruth Gawler for generously giving of their time and guidance to enable me to research the work they do. I would also like to thank the staff at The Gawler Foundation, Professor John Patterson, Dr Craig Hassed, Dr Luis Vitetta and Pauline McKinnon. And last but not least, I owe my thanks to the people that gave up their time to complete the questionnaires. Many of these were cancer patients and their courage and positive attitude in the face of difficult circumstances were unfailingly inspiring. Declaration This thesis contains no material which has been accepted for the award of any other degree or diploma in any University of other institution. To the best of my knowledge this thesis contains no material previously published or written by another person except where due reference is made in the text of the thesis. Nicola Reavley Table of Contents Table of Contents i List of Tables xi List of Figures xix List of Appendices xxii Abstract xxiii CHAPTER ONE: INTRODUCTION AND LITERATURE REVIEW 1.1 Overview of the thesis ............................................................................................................. 1 1.2 Introduction to the literature review..................................................................................... 2 1.3 Cancer ...................................................................................................................................... 3 1.3.1 Epidemiology of cancer in Australia........................................................................................ 4 1.3.2 Risk factors for cancer ............................................................................................................. 5 1.3.3 Psychosocial factors and cancer incidence............................................................................... 6 1.3.4 Diagnosis and management of cancer...................................................................................... 6 1.3.4.1 Conventional medical treatment .......................................................................................... 7 1.3.4.1.1 Supportive care........................................................................................................... 9 1.3.4.1.1.1 Pain and other symptoms....................................................................................9 1.3.4.1.1.2 Management of adverse effects of treatment.................................................... 10 1.3.4.2 Care of the dying patient.................................................................................................... 10 1.4 Adjustment to cancer............................................................................................................ 11 1.4.1 Cancer and emotional distress................................................................................................ 12 1.4.1.1 Adjustment disorders and cancer ....................................................................................... 13 1.4.1.2 Depression and cancer ....................................................................................................... 13 1.4.1.3 Anxiety disorders and cancer............................................................................................. 15 1.4.2 Pattern of distress over time................................................................................................... 15 1.4.2.1 Diagnosis ........................................................................................................................... 16 1.4.2.2 Acute survival.................................................................................................................... 17 1.4.2.3 Extended survival .............................................................................................................. 18 1.4.2.4 Permanent survival ............................................................................................................ 18 1.4.2.4.1 Survival and positive psychological consequences .................................................. 19 1.4.3 Recurrence ............................................................................................................................. 20 1.4.4 Transition to palliative care.................................................................................................... 20 1.4.5 Quality of life......................................................................................................................... 20 1.4.5.1 Definition of QOL ............................................................................................................. 21 1.4.5.2 QOL assessment ................................................................................................................ 22 1.4.5.3 QOL and prognosis............................................................................................................ 24 1.4.6 Factors influencing adjustment to cancer............................................................................... 24 1.4.6.1 Disease variables and adjustment ...................................................................................... 24 1.4.6.2 Demographic variables and adjustment ............................................................................. 25 1.4.6.3 Health behaviours and adjustment ..................................................................................... 26 1.5 Psychosocial factors and adjustment to cancer .................................................................. 27 1.5.1 Coping with cancer ................................................................................................................ 27 1.5.1.1 Types of coping strategies ................................................................................................. 28 1.5.2 Coping and adjustment........................................................................................................... 29 1.5.2.1 Fighting spirit and helplessness ......................................................................................... 30 1.5.2.2 Avoidance/denial ............................................................................................................... 31 1.5.2.3 Variation in coping over time ............................................................................................ 32 1.5.2.4 Disease severity and coping............................................................................................... 33 1.5.3 Coping style and disease progression..................................................................................... 34 1.5.4 Psychosocial stress and disease progression .......................................................................... 35 1.5.5 Spirituality/religion and adjustment to cancer........................................................................ 36 1.5.5.1 Definition of terms............................................................................................................. 36 1.5.6 Religion /spirituality and wellbeing in cancer patients .......................................................... 37 1.5.6.1 Coping ............................................................................................................................... 38 1.5.6.2 Negative and positive religious coping.............................................................................. 40 1.5.6.3 Spirituality/religiosity distinction ...................................................................................... 40 1.5.7 Social support and cancer....................................................................................................... 41 1.5.7.1 Types of social support...................................................................................................... 41 1.5.7.2 Social support and adjustment to cancer............................................................................ 42 1.5.7.2.1 Instrumental support.................................................................................................43 1.6 Psychosocial interventions in cancer care........................................................................... 44 1.6.1 Need for psychosocial support ............................................................................................... 44 1.6.2 Psychosocial interventions..................................................................................................... 45 1.6.2.1 Group interventions ........................................................................................................... 46 1.6.3 Psychosocial interventions and adjustment...........................................................................