Screening for major depressive disorder in adults with glioma using the PHQ-9: a comparison of patient versus proxy reports.

When screening for depression in glioma patients, the utility of proxy carer report is unknown. We studied how patients and proxies differed in the frequency, severity and agreement of reported depressive symptoms, the external validity of these reports, and whether patient-proxy agreement was associated with cognitive function. This was a cross-sectional study within a prospective cohort study of depression in glioma. Eligible patients were adults with a new diagnosis of cerebral glioma whose cohabiting partners chose to attend study interviews. Patients completed the Patient Health Questionnaire-9 (PHQ-9, maximum score 27) to screen for major depressive disorder. Proxies independently completed the PHQ-9 'for the patient'. A structured clinical interview for MDD was then given. From 55 couples attending, 41 participated (74 %). Patient-proxy total PHQ-9 score differed by 3 or more points in 26/41 cases (63.4 %). Disagreement within dyads ranged from -7 to +10 points. Proxies observed more individual depressive symptoms than patients reported (mean 2.7 vs 1.8 symptoms respectively, p = 0.013, Wilcoxon Rank Sum Test), and a greater severity of symptom burden (mean PHQ-9 score 8.4 vs 6.8 respectively, p = 0.016, Wilcoxon Rank Sum Test). Proxies were more reliable than patients on objective behavioural symptoms of depression. Dyadic agreement was not associated with severity of patient cognitive impairment. There was frequent disagreement between glioma patients and proxies reports of depressive symptoms. Proxies reported more depressive symptoms than patients, and were more reliable when reporting observable behavioural symptoms. When diagnosing depression in glioma, collateral history should be obtained.

The frequency, longitudinal course, clinical associations, and causes of emotional distress during primary treatment of cerebral glioma.

BACKGROUND: Relatively little is known about the frequency, longitudinal course, independent associations, and reported causes of emotional distress in adults with primary cerebral glioma. We aimed to describe these features in an observational study. METHODS: This was a twin-center prospective cohort study. Eligible adults were those with a new histological diagnosis of glioma who were receiving active management. Distress was measured using the National Comprehensive Cancer Network Distress Thermometer and problem checklist. Subjects were sampled at 3 timepoints: T1 (shortly after starting chemo/radiotherapy), T2 (3 months later), and T3 (6 months later). RESULTS: T1 n = 154; T2 n = 103; T3 n = 83. Significant distress was present in 36.4 ± 7.6% at T1, 35.9 ± 9.3% at T2, and 33.7 ± 10.2% at T3. Longitudinally, subjects with high distress at T1 (median Distress Thermometer score = 8; interquartile range [IQR] 7-9) remained highly distressed on follow-up (T2 median = 8, IQR 6-8; T3 median = 7, IQR 5-8) (Friedman test P = .304). Younger age, functional impairment, and concurrent major depressive disorder were independently associated with high distress (logistic regression χ(2) for model = 39.882, P < .001, R(2) = 0.312). The most frequently reported causes of distress were worry, fatigue, sleep difficulties, and sadness. Emotional difficulties were among the most common causes of distress at all 3 timepoints. CONCLUSIONS: At each timepoint, one-third of patients reported significant emotional distress, which persisted during follow-up among those initially highly distressed. Young, functionally impaired, and depressed glioma patients may particularly benefit from increased support.