Perceptions of patients' self-efficacy for managing pain and lung cancer symptoms: correspondence between patients and family caregivers.

This study examined the degree of correspondence between lung cancer patients and their family caregivers in their perceptions of the patients' self-efficacy for managing pain and other symptoms of lung cancer, and the association of this correspondence to demographic, disease, and psychosocial variables. Thirty patients who were newly diagnosed with lung cancer and their primary family caregivers completed telephone interviews assessing the patient's symptoms, the patient's self-efficacy for managing symptoms, the quality of the relationship between the patient and caregiver, patient and caregiver psychological distress, and caregiver strain. Although patients and their caregivers showed a moderate degree of agreement in their perceptions of the patient's self-efficacy for managing pain and other symptoms, there was considerable variability in the degree of congruence. Factors that contributed to lower levels of congruence included low patient-rated self-efficacy, female gender of the patient, high patient psychological distress, and high caregiver strain. Caregivers were about evenly split in their tendency to overestimate versus underestimate the patient's self-efficacy. A poorer quality of relationship between the caregiver and the patient (as rated by the patient), high levels of patient-rated symptoms, and high levels of caregiver strain were associated with caregivers overestimating patient self-efficacy.