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香港大學民意研究計劃 The University of Hong Kong Public Opinion Programme. The Sleep Quality and Quantity of PMEB in Hong Kong Presentation of Survey Findings. Presentation Outline: By Dr. Chung Ting Yiu (Data Analysis). Research Methodology and Contact Information
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香港大學民意研究計劃 The University of Hong Kong Public Opinion Programme The Sleep Quality and Quantity of PMEB in Hong Kong Presentation of Survey Findings
Presentation Outline: By Dr. Chung Ting Yiu(Data Analysis) • Research Methodology and Contact Information • The Sleeping Habits and Patterns of HK’s PMEB • Sleep Deprivation and its Effects among HK’s PMEB • Knowledge on Quality Sleep among HK’s PMEB
Outline of presentation: By Dr. Chung Ka Fai(Analyses and Comments) • Signs of Sleep Deprivation among PMEB • Occurrence of Insomnia and its Effects among PMEB • Improving the Quality of Sleep • Great Sleep Strategies
Contact information Date of Survey: April 24-26, 2002 Target Population: Local professionals, managers, executives and businessmen (PMEB) aged between 25 and 55 Survey Method: Telephone survey with interviewers Sample Size: 531 successful cases Effective Response Rate: 79.8% (Based on the target population) Sampling Error: Less than 2.2%
A recapitulation • Most respondents got up at 6-7am on weekdays, and 8-9am during weekends. • Most of the respondents went to bed during 11pm-00am, for both weekdays and weekends. • On average, respondents slept for 6 hours on weekdays. They slept for 7 hours and 15 minutes at weekends, which is 1 hour and 15 minutes more than that of weekdays. • Watching TV was the most popular activity within the hour before sleep, as revealed by 60% of the respondents.
Methods used to fall asleep again at times of mid-night awakenings or insomnia (Percentage of respondents)
Reasons for back pain in the morning(Percentage of respondents)
Bad-quality Sleep: Effects on daily lives(Percentage of respondents)
A recapitulation • Three-quarters experienced prolonged bad-quality sleep. • A quarter woke up twice or more every night. • If awaken, or suffering from insomnia, slightly more than 30% would lay in bed doing nothing. • About 60% experienced back pain in the morning. • Of those who experienced prolonged bad-quality sleep, 70% believe their performance at work was affected.
Ways of improving the quality of sleep(Percentages of respondents)
Methods used to improve the quality of sleep(Percentages of respondents) (N=192)
Reasons for not attempting to improve the quality of sleep (Percentages of respondents) (N=320)
A recapitulation • A significant number of respondents regarded uninterrupted sleep till a specified time as the key criterion of quality sleep. • One-third believed a total relaxation of mind before going to bed was effective in improving the quality of sleep. • 22% had no ideas of how to improve the quality of sleep. • More than 60% have never tried to improve the quality of sleep, in which 72% of them believed it was not necessary.
Comments on Research Findings By Dr. Chung Ka Fai, Assistant Professor Department of Psychiatry, HKU
Signs of Sleep Deprivation among PMEB • Occurrence of Insomnia and its Effects among PMEB • Improving the Quality of Sleep • Great Sleep Strategies
Amount of sleep is insufficient among PMEB (1) • Nearly half (48%) agreed that their amount of sleep is insufficient.
Amount of sleep is insufficient among PMEB (2) • 71% often needed to sleep longer during weekends. On average, they slept 1 hr and 15 minutes longer. • 60% often needed alarm clock or someone to wake them up in each morning and 42% had to struggle hard to wake up each morning. • 42% often dozed off while watching TV, 41% often dozed off at meetings. 35% often dozed off during rest after lunch or dinner. • Of particular importance, 53% of those who drove agreed that they sometimes were very sleepy while driving. • A high proportion of the PMEB (94%) had 1 or more signs indicative of insufficient sleep.
What is insufficient sleep andwhat is sufficient sleep? • Of course there is an individual variation in sleep requirement, some may need less and some require more • Although insufficient sleep does not cause harm to our health directly, the result of insufficient sleep, i.e. sleepiness can lead to: • motor vehicle and work-related accidents • impaired performance • neuropsychological dysfunctions, such as decreased creativity, logical thinking; emotional instability • poor quality of life
What is a Quality Sleep? • An uninterrupted sleep • Appropriate sleeping time and hours • The sleep cycle
Insomnia is common among PMEB • 35% of the respondents often require 30 minutes or more to fall asleep • 25% often wake 2 times or more during sleep • only half of the subjects (54%) report that they can sleep more than 85% of the time in bed • 43% had experienced insomnia consecutively for 3 or more days
Insomnia affect their daytime function • Subjects who had experiences of insomnia for 3 days or more (43%) reported that their daytime function were affected. • Areas affected (in decreasing degree of influence) include • work performance (73%) • self-study (52%) • interest (44%) • exercise (43%) • social life (32%) • communication with family (32%), and • sex life (29%) • Insomnia not only affect our enjoyment on the next day and can perpetuate insomnia in the following night.
A vicious cycle that perpetuate insomnia Unhealthy Sleep Habit Poor Sleep Impaired Daytime Function
What can we do to improve our sleep? • Many people (48%) understand that they have insufficient sleep, but... • Many people (61%) had not tried to improve their sleep quality, in which 72% of them said they do not need to, … • Similar to having a good diet habit, a healthy sleep habit is important and easy to obtain: • adequate and regular sleep • regular relaxation activities - exercise, music, yoga, Tai Chi, etc • devoted the sleeping hours to “sleep”
Great sleep strategies (1) • Value sleep • Exercise to stay fit • Keep mentally stimulated during the day • Eat a proper diet • Stop smoking • Avoid alcohol or caffeine • Maintain a relaxing atmosphere in the bedroom
Great sleep strategies (2) • Avoid trying too hard to get to sleep • Clear your mind at bedtime • Limit your time in bed
The End(Survey Findings soon be available at http://hkupop.hku.hk)