Final answer:
Approximately 37% of the care provided by healthcare professionals is based on evidence, according to the study by Gray et al.
Step-by-step explanation:
According to the study by Gray et al, it was found that approximately 37% of the care provided by healthcare professionals in the United States is based on evidence. This means that evidence-based practice plays a significant role in healthcare decision-making and treatment approaches.
Evidence-based practice involves integrating the best available evidence with healthcare professionals' expertise and patient values and preferences. By using evidence-based guidelines and recommendations, healthcare professionals can ensure that their care is supported by scientific research and has proven effectiveness.
This study's findings highlight the importance of evidence-based practice in healthcare to ensure optimal patient outcomes and quality care delivery.