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PURPOSE It remains unclear, how much older persons' sleep problems are due to age-related changes in sleep architecture and pattern, or whether they are a consequence of health problems. This work aimed to examine the association between sleep characteristics and self-rated health, taking into account potential confounders. METHODS Data about sleep, including sleep efficiency (ratio of sleep duration to the amount of time spent in bed, considered as good if  85%), as well as health-rated characteristics were self-reported by communit