All of the following are demographic data relevant to caries risk assessment EXCEPT:

Demographic data refers to population statistics that characterize groups of people: age, gender, ethnicity, socioeconomic status, and education level. These factors are associated with caries prevalence and influence access to care and fluoride exposure. Nutritional habits (diet composition, frequency of sugar intake) are behavioral/clinical data — an important caries risk factor, but a behavioral variable rather than a demographic one. In caries risk assessment models (e.g., Caries Management by Risk Assessment — CAMBRA), diet is assessed separately as a behavioral risk indicator. Age, gender, and socioeconomic status are true demographic variables used to stratify populations in epidemiological studies of caries.