Depression and anxiety are mood disorders that are commonly related to chronic illnesses. The overall frequency in hospitalized patients has an index of variation between 20 and 60% 1-3 , and they are not recognized in one third of patients 4 . Their frequency can be higher in patients without mood disorders presenting symptoms caused by physical illness or preoperative anxiety, which range from 11 to 80% in adults 5 . This variation is related to the sociodemographic characteristics of the population studied, type of disease, degree of involvement, chronicity, and variability of the methodological definitions used in the studies, such as the cutoff point, the search tools, and the case definition. The literature offers different scales for the assessment of anxiety and depression, such as Beck Depression Inventory (BDI), Hospital Palavras-Chave: cirurgia da coluna, depressão,