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- A history of stroke was reported by 2.7% of the less than 6 hours sleep group, 1.7% of the 6-8 hours group, and 2.2% of the greater than 8 hours group, with an overall prevalence of 2.1%.
- For subjects with Short Sleep Duration (SSD) in Wave 1, the study classifies change patterns as: 'Excessive' (if there was one wave with Long Sleep Duration), 'No change' (maintained SSD in two waves), 'Benefit 1' (maintained SSD in one wave and had Moderate Sleep Duration in another), and 'Benefit 2' (Moderate Sleep Duration in two waves).
- The mean Body Mass Index (BMI) of all participants was 23.4 (standard deviation 3.7), with the less than 6 hours sleep group at 23.0, the 6-8 hours group at 23.6, and the greater than 8 hours group at 23.2.
- A meta-analysis revealed an inverted-U-shaped association between sleep duration and the risk of Alzheimer’s disease, where both short sleep duration (SSD) and long sleep duration (LSD) are associated with a higher risk compared to moderate sleep duration (MSD).
- The mean age of all participants in the study was 59.1 years (standard deviation 9.8), with the less than 6 hours sleep group having a mean age of 61.0 years, the 6-8 hours group having a mean age of 58.1 years, and the greater than 8 hours group having a mean age of 59.7 years.
- For subjects with Long Sleep Duration (LSD) in Wave 1, the study classifies change patterns as: 'Excessive' (if there was one wave with Short Sleep Duration), 'No change' (maintained LSD in the two waves), 'Benefit 1' (maintained LSD in one wave and had Moderate Sleep Duration in another), and 'Benefit 2' (Moderate Sleep Duration in two waves).
- The study defines sleep duration categories as Short Sleep Duration (SSD), Moderate Sleep Duration (MSD), and Long Sleep Duration (LSD).
- For short sleepers, a consistent change to moderate sleep duration (MSD) was associated with high global cognition scores, equivalent to 4-10 years of cognitive ageing, with improvements in figure drawing and TICS domains.
- Short sleepers in Wave 1 demonstrated lower scores in the specific cognitive domains of episodic memory, figure drawing, and the Telephone Interview of Cognitive Status (TICS) compared to moderate sleepers.
- A change from short sleep duration to moderate sleep duration is associated with better global cognition scores (β=0.54, P <0.01) in individuals aged 45 and older.
- The prevalence of hypertension was 26.7% in the less than 6 hours sleep group, 22.9% in the 6-8 hours group, and 25.5% in the greater than 8 hours group, with an overall prevalence of 24.2%.
- The effect of short sleep duration on global cognition scores was equivalent to being 5 to 9 years older compared to the moderate sleep-duration group.
- The study categorized 15,216 participants into three sleep duration groups in Wave 1: less than 6 hours (n=4,453), 6 to 8 hours (n=9,508), and greater than 8 hours (n=1,255).
- The use of tranquilizers was reported by 0.6% of the less than 6 hours sleep group, 0.2% of the 6-8 hours group, and 0.0% of the greater than 8 hours group, with an overall prevalence of 0.3%.
- Short sleepers, defined as those sleeping less than 6 hours per night in Wave 1, had lower global cognition scores compared to moderate sleepers (6-8 hours) in the study.
- A history of heart disease was reported by 15.3% of the less than 6 hours sleep group, 11.1% of the 6-8 hours group, and 9.4% of the greater than 8 hours group, with an overall prevalence of 12.1%.
- Current smoking prevalence was 37.2% in the less than 6 hours sleep group, 40.0% in the 6-8 hours group, and 37.2% in the greater than 8 hours group, with an overall prevalence of 39.0%.
- The prevalence of depression among participants was 6.8% for the less than 6 hours sleep group, 6.9% for the 6-8 hours group, and 9.5% for the greater than 8 hours group, with an overall prevalence of 7.1%.
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Improvement in sleep duration was associated with higher cognitive ... aging-us.com 18 facts
measurementA history of stroke was reported by 2.7% of the less than 6 hours sleep group, 1.7% of the 6-8 hours group, and 2.2% of the greater than 8 hours group, with an overall prevalence of 2.1%.
procedureFor subjects with Short Sleep Duration (SSD) in Wave 1, the study classifies change patterns as: 'Excessive' (if there was one wave with Long Sleep Duration), 'No change' (maintained SSD in two waves), 'Benefit 1' (maintained SSD in one wave and had Moderate Sleep Duration in another), and 'Benefit 2' (Moderate Sleep Duration in two waves).
measurementThe mean Body Mass Index (BMI) of all participants was 23.4 (standard deviation 3.7), with the less than 6 hours sleep group at 23.0, the 6-8 hours group at 23.6, and the greater than 8 hours group at 23.2.
referenceA meta-analysis revealed an inverted-U-shaped association between sleep duration and the risk of Alzheimer’s disease, where both short sleep duration (SSD) and long sleep duration (LSD) are associated with a higher risk compared to moderate sleep duration (MSD).
measurementThe mean age of all participants in the study was 59.1 years (standard deviation 9.8), with the less than 6 hours sleep group having a mean age of 61.0 years, the 6-8 hours group having a mean age of 58.1 years, and the greater than 8 hours group having a mean age of 59.7 years.
procedureFor subjects with Long Sleep Duration (LSD) in Wave 1, the study classifies change patterns as: 'Excessive' (if there was one wave with Short Sleep Duration), 'No change' (maintained LSD in the two waves), 'Benefit 1' (maintained LSD in one wave and had Moderate Sleep Duration in another), and 'Benefit 2' (Moderate Sleep Duration in two waves).
referenceThe study defines sleep duration categories as Short Sleep Duration (SSD), Moderate Sleep Duration (MSD), and Long Sleep Duration (LSD).
claimFor short sleepers, a consistent change to moderate sleep duration (MSD) was associated with high global cognition scores, equivalent to 4-10 years of cognitive ageing, with improvements in figure drawing and TICS domains.
measurementShort sleepers in Wave 1 demonstrated lower scores in the specific cognitive domains of episodic memory, figure drawing, and the Telephone Interview of Cognitive Status (TICS) compared to moderate sleepers.
measurementA change from short sleep duration to moderate sleep duration is associated with better global cognition scores (β=0.54, P <0.01) in individuals aged 45 and older.
measurementThe prevalence of hypertension was 26.7% in the less than 6 hours sleep group, 22.9% in the 6-8 hours group, and 25.5% in the greater than 8 hours group, with an overall prevalence of 24.2%.
measurementThe effect of short sleep duration on global cognition scores was equivalent to being 5 to 9 years older compared to the moderate sleep-duration group.
measurementThe study categorized 15,216 participants into three sleep duration groups in Wave 1: less than 6 hours (n=4,453), 6 to 8 hours (n=9,508), and greater than 8 hours (n=1,255).
measurementThe use of tranquilizers was reported by 0.6% of the less than 6 hours sleep group, 0.2% of the 6-8 hours group, and 0.0% of the greater than 8 hours group, with an overall prevalence of 0.3%.
measurementShort sleepers, defined as those sleeping less than 6 hours per night in Wave 1, had lower global cognition scores compared to moderate sleepers (6-8 hours) in the study.
measurementA history of heart disease was reported by 15.3% of the less than 6 hours sleep group, 11.1% of the 6-8 hours group, and 9.4% of the greater than 8 hours group, with an overall prevalence of 12.1%.
measurementCurrent smoking prevalence was 37.2% in the less than 6 hours sleep group, 40.0% in the 6-8 hours group, and 37.2% in the greater than 8 hours group, with an overall prevalence of 39.0%.
measurementThe prevalence of depression among participants was 6.8% for the less than 6 hours sleep group, 6.9% for the 6-8 hours group, and 9.5% for the greater than 8 hours group, with an overall prevalence of 7.1%.