Gender differences in superior-memory SuperAgers and associated factors in an Australian cohort

Abstract

Despite expectations of deterioration in memory function with age, some older adults demonstrate superior memory performance and have been defined as SuperAgers. Method: SuperAgers were identified in a population-based prospective cohort in Australia (n = 1,679; 49.4% female; mean age = 70.6 ±1.5 years) as participants who, over a 12-year period, consistently scored at or above the median of participants 40 years younger on recall tasks. Chi-square and t tests and logistic regression models measured associations between risk factors and being a SuperAger. Results: The prevalence of SuperAgers was higher in women (8.6%) than men (5.3%). Education was associated with being a SuperAger for women (adjusted odds ratio [OR] =1.13, 95% confidence interval [CI] = [1.01, 1.26]) and men (adjusted OR = 1.22, 95% CI = [1.05, 1.40]). Other associated factors were investigative activities and alcohol consumption for women and social activities and depressive symptoms for men. Conclusion: Adults over 60 can sustain superior memory recall; however, associated factors may vary between genders.