What are the sub-levels of Level 1 evidence for NANDA-I diagnoses and what criteria define each sub-level?

Level 1 evidence for NANDA-I diagnoses has three sub-levels: 1.1 Label only, 1.2 Label and definition, and 1.3 Diagnostic components and relationship with outcomes and interventions. Level 1.1 requires a clear diagnostic label supported by a literature review. Level 1.2 adds a clear, distinct definition that is consistent with NANDA-I's definition of a nursing diagnosis and supported by literature. Level 1.3 requires the full diagnostic structure, including components, plus a stated relationship to interventions and outcomes in other standardized terminologies.

In the NANDA-I evidence level classification, Level 1 represents the initial stages of diagnosis development before inclusion in the terminology. It is divided into three sub-levels. Level 1.1, Label only, is the first step in which a title is developed using the multiaxial system to represent a human response. The evidence criterion is a diagnostic label that is clear and supported by a previously conducted literature review, presented in report format; the DDC provides guidance. Level 1.2, Label and definition, requires the diagnostic label and a clear, distinct definition that is different from other NANDA-I diagnoses and definitions. The definition must not include the label or its components, and the proposal must represent a human response for which the nurse can implement independent nursing interventions, with the label and definition based on a literature review evaluated by the DDC. Level 1.3, Diagnostic components and relationship with outcomes and interventions, requires the label, definition, and other diagnostic components such as defining characteristics, related or risk factors, and applicable associated conditions or at-risk populations, all supported by references from a literature review. The proposal must also present the relationship of the diagnosis to interventions and outcomes as represented in other standardized terminologies, such as the Nursing Outcomes Classification and Nursing Interventions Classification. Proposals at this level are categorized as received for clinical development and validation and may be submitted directly at this level without first completing Levels 1.1 and 1.2.