TY - JOUR
T1 - Alterations and interdependence in self-reported sleep-wake parameters of patient-caregiver dyads during adjuvant chemotherapy for breast cancer
AU - Kotronoulas, Grigorios
AU - Wengström, Yvonne
AU - Kearney, Nora
PY - 2016/5/31
Y1 - 2016/5/31
N2 - Purpose/Objectives: To longitudinally explore changes, similarities, differences, and interrelations in the sleep-wake parameters of patient-caregiver dyads throughout adjuvant chemotherapy for breast cancer. Design: Observational, repeated-measures, dyadic study. Setting: Four ambulatory oncology clinics in Scotland. Sample: 48 dyads consisting of patients and their primary informal caregivers. Methods: Four dyadic, self-reported sleep-wake assessments took place before chemotherapy (TO), during chemotherapy cycles 1 (T1) and 4(T2), and after chemotherapy (T3). Dyads completed the Pittsburgh Sleep Quality Index. Multilevel hierarchical linear modeling was used to explore dyadic data. Main Research Variables: Perceived sleep quality, sleep onset latency (SOL), total sleep time, habitual sleep efficiency, wake after sleep onset, daily disturbance, daytime napping duration, overall sleep-wake impairment. Findings: The majority of dyads had at least one poor sleeper throughout the study; 25%-35% were dyads of concurrent poor sleepers. Curvilinear patterns of change were evident for patients' (but not caregivers') sleep-wake parameters, steadily deteriorating from pre- to midtreatment, then leveling off close to baseline. Average trajectories were significantly different between the dyad members but indicative of a trend for concurrent deterioration at T2. Dyad members' perceived sleep quality, SOL, and overall sleep-wake impairment were closely interrelated; wake variables remained uncoupled. Conclusions: Despite overall differences in magnitude, sleep problems may be concurrently present in both dyad members, covary, and peak midway through chemotherapy. Implications for Nursing: Dyadic sleep assessments can shed light on potential areas of sleep interaction to enable interventions to support care dyads at risk of sleep distress during chemotherapy for breast cancer.
AB - Purpose/Objectives: To longitudinally explore changes, similarities, differences, and interrelations in the sleep-wake parameters of patient-caregiver dyads throughout adjuvant chemotherapy for breast cancer. Design: Observational, repeated-measures, dyadic study. Setting: Four ambulatory oncology clinics in Scotland. Sample: 48 dyads consisting of patients and their primary informal caregivers. Methods: Four dyadic, self-reported sleep-wake assessments took place before chemotherapy (TO), during chemotherapy cycles 1 (T1) and 4(T2), and after chemotherapy (T3). Dyads completed the Pittsburgh Sleep Quality Index. Multilevel hierarchical linear modeling was used to explore dyadic data. Main Research Variables: Perceived sleep quality, sleep onset latency (SOL), total sleep time, habitual sleep efficiency, wake after sleep onset, daily disturbance, daytime napping duration, overall sleep-wake impairment. Findings: The majority of dyads had at least one poor sleeper throughout the study; 25%-35% were dyads of concurrent poor sleepers. Curvilinear patterns of change were evident for patients' (but not caregivers') sleep-wake parameters, steadily deteriorating from pre- to midtreatment, then leveling off close to baseline. Average trajectories were significantly different between the dyad members but indicative of a trend for concurrent deterioration at T2. Dyad members' perceived sleep quality, SOL, and overall sleep-wake impairment were closely interrelated; wake variables remained uncoupled. Conclusions: Despite overall differences in magnitude, sleep problems may be concurrently present in both dyad members, covary, and peak midway through chemotherapy. Implications for Nursing: Dyadic sleep assessments can shed light on potential areas of sleep interaction to enable interventions to support care dyads at risk of sleep distress during chemotherapy for breast cancer.
KW - Breast cancer
KW - Caregiver
KW - Dyadic research
KW - Sleep
KW - Sleep assessment
KW - Sleep-wake problems
UR - http://www.scopus.com/inward/record.url?scp=84964583014&partnerID=8YFLogxK
U2 - 10.1188/16.ONF.288-301
DO - 10.1188/16.ONF.288-301
M3 - Article
AN - SCOPUS:84964583014
SN - 0190-535X
VL - 43
SP - 288
EP - 301
JO - Oncology Nursing Forum
JF - Oncology Nursing Forum
IS - 3
ER -