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Objective:  to analyze the relationship between the duration of self-reported night sleep and the cognitive performance of older adults.    Method:  the sample consisted of 156 older adults registered in Family Health Units (FHUs) in a city of São Paulo, divided into quartiles according to the duration of night sleep. Data collection was performed using a characterization questionnaire, Addenbrooke’s Cognitive Exam – Revised (ACE-R) and Pittsburgh Sleep Quality Index (PSQI). Descriptive, comparative and correlational statistical analyses were performed.    Results:  the older adults obtained a mean of 61.94 points in ACE-R and 55.1% presented good sleep quality. Comparative analyses showed differences between the groups only in the cognitive domain of verbal fluency (p=0.018). The  post-hoc  analyses showed that older adults who slept more hours, a mean of 8.85 hours (Q 1 ), had lower scores when compared to those who slept a mean of 6.11 hours (Q 3 ) (p=0.004) and of 4.52 hours (Q 4 ) (p=0.045). The adjusted model with application of the stepwise method showed a relationship between the independent variables of schooling and sleep duration and the domain verbal fluency.    Conclusion:  it is concluded that sleep duration is related to the verbal fluency cognitive domain.

Duration of night sleep and cognitive performance of community older adults