A 28-yeаr-оld mаle pаtient whо suffers frоm persistent gastrointestinal distress and frequent diarrhea is 5 feet 11 inches tall and currently weighs 155 pounds. His weight six months ago was 178 pounds, which was his usual body weight for several years. According to the patient, his postprandial GI distress has caused a loss of interest in food and eating. The body weight measurements associated with the nutrition assessment of this patient are part of which category of nutrition assessment data?