A physician is treating a patient of Northern European descent who presents with symptoms of chronic pain, anemia, and fatigue. The physician immediately dismisses the possibility of sickle-cell anemia, stating that it is 'a disease that primarily affects people of African descent.' Which of the following statements best analyzes the flaw in the physician's diagnostic reasoning?

A physician is treating a patient of Northern European descent who presents with a chronic cough, poor weight gain, and digestive problems. The physician immediately begins testing for cystic fibrosis, a condition more prevalent in this population. However, the physician does not consider ordering tests for sickle-cell trait, even though the patient also complains of occasional, unexplained episodes of severe pain, a symptom sometimes associated with that condition. Which statement best analyzes the potential flaw in the physician's diagnostic process?