Baseline data is crucial for several reasons: 1. Assessment and Diagnosis: It helps nurses to identify deviations from the norm, which can indicate health issues. 2. Care Planning: It aids in creating an individualized care plan tailored to the patient's needs. 3. Monitoring Progress: It allows for tracking the effectiveness of treatments and interventions over time. 4. Communication: It facilitates clear communication among healthcare providers, ensuring continuity of care.