Postconcussive symptom severity, risk factors for prolonged recovery, and mental health history: Pathways of influence in a diverse pediatric sample.

Fragmented care is a defining challenge in the management of older adults, frequently resulting in duplicated investigations, unclear clinical ownership and delayed or inconsistent decision-making. These problems are most pronounced in community and home-based care settings, where multiple providers contribute episodically without a single coordinating clinician, and where the absence of institutional structures makes clinical accountability especially difficult to assign. As populations age and multimorbidity becomes the norm, the consequences of fragmented care are increasingly clinically and economically significant. Comprehensive geriatric assessment (CGA) is widely regarded as the standard multidimensional approach for evaluating older adults. However, translating CGA principles from specialist geriatric practice into routine community care remains difficult. Similarly, although laboratory testing is frequently used in older adults, there is no consensus on a minimal essential laboratory panel, nor on which clinician should assume responsibility for ordering and interpreting these tests in shared-care settings. Older adults are a heterogeneous population in whom disease burden reflects interacting biological, functional and social determinants, and multimorbidity is common, further complicating care coordination. Existing principles for the care of older adults with multimorbidity emphasise individualised prioritisation and coordinated decision-making, but do not fully operationalise who should assess, test and act in fragmented primary care.