Assessment of Psychological Distress and its Effect on Quality of Life and Social Functioning in Cancer Patients

INTRODUCTION

Cancer is a disease involving intensive treatment with different modalities such as surgery, radiation, and chemotherapy. This along with the disease burden may makes patients with cancer psychologically distressed. The psychological and social issues are often overlooked by the physicians while attending a patient with cancer. Several studies have shown the stress associated with cancer treatment might have a role in progression of cancer[1234] and cancer-related death.[5678] The prevalence of psychosocial distress among cancer patients is estimated to be around 30%.[9] Although the impact of stress-modifying interventions on the outcome of cancer is not established,[1] there is a need to address the psychosocial issues in cancer patients in addition to the multimodality cancer-directed therapy to attempt to improve their quality of life (QOL). The purpose of this study is to evaluate the level of psychological distress and social functioning in cancer patients and to assess the association of these parameters with the QOL experienced by the patient.

PATIENTS AND METHODS

The population intended were cancer patients attending the palliative care clinic in our tertiary care cancer center who can understand and speak English or Tamil language. The criteria for inclusion were histopathologically confirmed malignancy, age more than 20 years, and ability to communicate effectively with the investigator either in Tamil or English language. Critically ill patients, those with hearing and speech defects, and pediatric age group were excluded from the study. The purpose of the study was explained, and oral consent was taken. A total of 251 patients could complete the questionnaire and were included in the study. The assurance was given to the study participants that anonymity of each individual will be maintained. Interview techniques were used to collect the data. The questions were read out to the patient (in their language of preference, i.e., Tamil or English) and the responses were marked in the questionnaire. The questionnaire consisted of four sections, namely, demographic and background variables of the patients, general health questionnaire, WHO QOL abbreviated study questionnaire (WHO QOL-BREF), and Scarf social functioning index.

The questionnaire consisted of five sections

Section 1: It consisted of tool to collect demographic variables of patients with cancer which include age, education, religion, occupation, marital status, age at marriage, type of marriage, the number of children, domicile, and treatment details.

Section 2: It is the general health questionnaire-28[10] and was used to measure the psychological distress of the cancer patients. The instrument consists of 28 items with four-point scale ranging from "not at all (0)" to "much more than usual (3)."

Information on the experience of symptoms of psychological distress will be obtained. The number of items in each element in the scale is as follows:

• Somatic symptoms (7 items) 1, 2, 3, 4, 5, 6, 7

• Anxiety and insomnia (7 items) 8, 9, 16, 18, 19, 20, 23

• Social dysfunction (7 items) 10, 11, 12, 13, 14, 15, 17

• Severe depression (7 items) 21, 22, 24, 25, 26, 27, 28.

Section 3: It had WHO QOL abbreviated survey questionnaire WHO QOL-BREF (1996). It is a 26-item generic questionnaire with 5-point scale ranging from "very bad (1)" to "very good (5)". It provides a short form of QOL.

Section 4: SCARF Social functioning index[11] consisted of tool to assess the functioning level of patients with cancer receiving the treatment. It includes four subsections. They are self-concern, occupational role, role in the family, and other social roles. Each section has four subsections, except the section on "other social roles" which has five subsections.

1. Self-concern includes self-care, personal belongings, personal space, eating practices, and health care

2. The occupational role includes regularity in occupational functioning, quality of occupation, quality of performance, and occupational interests

3. Role in the family includes marital role, role as a child, role as a parent, and family relationships

4. Other social roles include relationship with family members not living in the same home, relationship with friends, relationship with neighbors, colleagues at the place of work, and social activity groups.

RESULTS

The descriptive data are presented in Table 1. The median age was 52 years. The patients were grouped according to age, and approximately patients of age <40 years were 19%, 40–55 years were 44%, and >55 years were 37%. About 53.8% were males, and 46.2% were females. About 62% of the patients were illiterate and 53% were unemployed. Nearly, 76% of the patients belonged to the rural community, and 67% had more than two children. The median scores obtained are psychological distress = 44 (11–98), WHO QOL = 64 (36–117), and social function = 51 (29–79). About 62.4% responded as having moderate distress and 30% had severe distress, 25.6% experienced poor QOL, and 23.2% had severely affected social functioning. The Frequency of scores among the patients is presented in Table 2 and illustrated in Diagram 1.

Table 1 Scores observed among different patient subgroups

Table 2 Frequency of scores among the patients

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Diagram 1

Diagram representing the distribution of scores among the patients

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DISCUSSION

In this study, we have evaluated the relationship between patient distress level, social function status, and QOL. At least a quarter of the patients responded that they experienced severe distress, have a poor QOL, and function poorly in the society. We have observed a correlation between these scores. The distress level experienced correlated negatively with social function status implying that the patients who experienced higher distress had a poor social function. Similarly, patients with higher distress levels had worse scores on WHO QOL questionnaire. The QOL correlated positively with social function indicating that patients with good QOL had better social function status. Unlike what was seen in a study by Mystakidou et al.,[12] our study did not show any relationship of age and education with distress or QOL. The diagnosis of cancer and the toxicity involved in its treatment may cause patients to experience psychological distress. We observed that these patients fail to fulfill their role as a member of family and society. We have seen that the unskilled laborers had worse scores in all three questionnaires. The disease might have prevented them to resume their work involving physical strength. Failure to provide to the family might have aggravated the distress and reduced the QOL. Hence, the improvement in QOL is not possible by cancer treatment alone but by alleviating the distress associated with the disease.

It has been in shown in studies that psychosocial stress has a role in cancer progression by its impact on mechanisms of immune regulation, angiogenesis, and invasion.[1] A study in ovarian cancer patients has shown that social support is related to lower levels of VEGF both in serum and tumor tissue.[13] In another study, ovarian cancer patients with poor social support expressed higher levels IL-6 which is an angiogenic factor produced by tumor cells that disrupt the equilibrium between pro- and anti-angiogenic factors.[14] There is an evidence of association between dysregulations in diurnal cortisol secretion and diminished QOL, greater functional disability, fatigue, and poorer outcomes in breast cancer patients.[151617] Thus, the above-mentioned studies indicate that the stress experienced by the patients can affect the outcome of cancer. The role of psychosocial intervention in decreasing pain and anxiety,[18] improving QOL,[192021] and ability to complete the therapy has been shown but whether it can affect cancer progression and survival has not been established.[1920212223] Several reports have also shown the relationship between distress level and QOL[1224] consistent with what we have observed in our study. Although the evidence is not convincing that any psychosocial intervention to improve the distress and QOL has any role in improving cancer outcomes, we believe that attempt should be made to reduce the distress and improve QOL by counselling and palliative care. The aim of cancer therapy should not only be prolonging life but also to maintain health as its holistic definition.

Limitations of this study include a population of a single institution with possible institutional bias, and the effect of the burden of disease on QOL and distress has not been evaluated. Although we attempted to compare the patient characteristics with the scores, conclusions cannot be drawn as it is an observational cohort study and has unequal distribution among patient subgroups. The strengths of the study are heterogeneous population with a variety of disease groups and excellent participation of the study participants in responding to the questionnaire.

CONCLUSION

Psychosocial stress associated with cancer and its treatment is often overlooked by the treating physicians. It can impact the QOL and social functioning of the patient and needs to be addressed along with the cancer-directed therapy. As there is a significant correlation between psychosocial distress and QOL experienced, interventions such as holistic palliative care and social support aiming to reduce the patients’ distress could result in improved QOL and better social functioning.