The first step to prioritize patient care issues using data is to understand where the data comes from, what it represents, and how reliable it is. Data can come from various sources, such as electronic health records, patient surveys, quality metrics, clinical trials, or public health databases. Each source has its own strengths and limitations, and you need to be aware of them before using the data. For example, electronic health records can provide detailed and timely information about a patient's medical history, but they may also contain errors, gaps, or biases. Patient surveys can offer valuable insights into a patient's preferences, satisfaction, or concerns, but they may also be influenced by factors such as response rates, survey design, or social desirability. Quality metrics can measure the performance of a healthcare provider or system, but they may also vary depending on the definitions, methods, or benchmarks used. Clinical trials can generate evidence-based data about the effectiveness and safety of a treatment, but they may also have limitations such as sample size, selection criteria, or generalizability. Public health databases can provide aggregated and standardized data about the population health, but they may also be outdated, incomplete, or inconsistent.