Psychological & Psychiatric Care Evidence

A meta-analysis of 94 interview-based studies found depression prevalence of approximately 29% across oncological, hematological, and palliative care settings. Depression is the most common psychiatric diagnosis in patients with advanced illness and is systematically under-identified and undertreated.

A meta-analysis of 38 randomized trials of palliative care interventions found no statistically significant pooled improvement in patient or caregiver anxiety, depression, or psychological distress at 3 months. Many trials (14 of 38) excluded participants with common mental health conditions. The result applies to typical palliative care interventions, not to specific psychotherapies.

In an unblinded randomized trial at one Toronto cancer center (n=305), patients with advanced cancer offered CALM plus usual care reported modestly lower depressive symptoms than usual care alone at 3 months (d=0.23) and 6 months (d=0.29), and more end-of-life preparation at 6 months. A later trial found no advantage over supportive counseling.

In a single-blind randomized trial (Mehnert et al. 2020, N=206), depressive symptoms improved over six months in both arms, but CALM was not significantly better than non-manualized supportive counselling on the primary outcome (BDI-II P=.62; PHQ-9 P=.998), and secondary outcomes were also non-significant. The active ingredients of psychological benefit in palliative settings are not yet established.

In a three-arm randomized trial (dignity therapy, client-centred care, standard palliative care; 441 randomized), distress did not differ between groups after the intervention. On a post-study survey, more dignity therapy participants reported it was helpful, improved quality of life, and increased their sense of dignity than in the other arms. These are secondary, self-reported outcomes.

In a randomized trial of 253 patients with advanced cancer (Memorial Sloan Kettering), eight-session meaning-centered group psychotherapy beat supportive group psychotherapy on spiritual well-being, quality of life, depression, hopelessness and desire for hastened death among participants who attended 3 or more sessions. In intent-to-treat analyses, only quality of life, depression and hopelessness differed significantly.

Demoralization syndrome (characterized by hopelessness, helplessness, and existential despair) is a clinically distinct condition relevant to palliative populations. It requires different assessment and intervention strategies than standard antidepressant-focused depression protocols.

A meta-analysis of HADS diagnostic accuracy in oncology and palliative settings found moderate sensitivity and specificity for identifying depression and anxiety. HADS performs best as a screening instrument rather than a diagnostic tool; abnormal scores should prompt clinical interview rather than serving as a standalone diagnosis.

The CMS CY2025 Physician Fee Schedule Final Rule (CMS-1807-F) confirms Collaborative Care Model (CoCM) and Behavioral Health Integration (BHI) billing codes under Medicare. This provides a reimbursement pathway for integrated behavioral health services in primary care and palliative settings.

The HOPE (Hospice Outcomes and Patient Evaluation) assessment tool, the CMS-mandated quality reporting instrument beginning October 2025, contains a spiritual and existential concerns item (F3000) but does NOT include the PHQ-2, PHQ-9, GAD-7, HADS, or any standardized depression or anxiety severity instrument. HOPE captures spiritual process items only; psychological severity screening remains outside the standardized HOPE measurement framework.

A meta-analysis of 25 randomized trials found antidepressants more efficacious than placebo for depression in palliative care at 4-5, 6-8 and 9-18 weeks (ORs 1.93 to 2.71). The authors say biases such as selective reporting and publication likely overestimate the effect.

Meaning-Centered Psychotherapy for Cancer caregivers (MCP-C; NCT06307535, Mount Sinai) is an active randomized trial with planned enrollment of 200.

In a randomized trial of 240 adults with advanced cancer and depression or anxiety symptoms, an online acceptance-based group program delivered by social workers (five weekly sessions plus self-paced modules) led to 1.27 more advance care planning steps than usual care at 3.5 months (95% CI 0.36 to 2.18). Spiritual well-being, a secondary outcome, also favored the program (d=0.42). Fear of death and anxiety did not differ.

In a non-blinded wait-list pilot trial at one Singapore cardiac center, patients offered the ENABLE palliative care coaching program had a higher mean KCCQ score at 6 months than the wait-list group (difference 12.4; 95% CI 0.9 to 24.0). Caregiver quality of life did not differ. The authors plan a larger trial.

A narrative systematic review of 6 small controlled trials of multi-session music therapy in advanced cancer (438 participants; half rated high quality) found no significant change in global quality of life. Individual trials reported improvements in spiritual well-being, ego-integrity, sleep quality, and anxiety. No pooled estimate was made.

A 2026 systematic review of 8 studies of meaning in life in adult palliative cancer care (4 cross-sectional, 2 randomized trials, 1 longitudinal, 1 qualitative; 7 at high risk of bias) found meaning in life associated with less depression and anxiety and better quality of life. The authors say the evidence is too weak to recommend meaning-centered interventions for routine practice.

A published protocol (Creech et al. 2026) plans to compare 30-day readmissions after a structured chaplain intervention with a follow-up phone call against a standard spiritual support visit, in 200 hospitalized palliative care patients at one Mayo Clinic site. The paper calls the design quasi-experimental but describes randomization. No results are available.