경남 일부지역 농민들의 수면습관

Sleep Habits of Farmers in a Rural Area

In order to investigate the sleep habits of farmers in a rural area, we studied 270 subjects (farmers) in a rural area from August 14，1995 to August 19, 1995. Sleep habits were analyzed according to age groups(3 groups of 18-30，31-50，over 51 years) and sex. The results were as follows ： 1) The mean sleep length was 6 .7土 1.5 hours, and was longer in female than in male. In the above 51-year-old age group, sleep length was significantly shorter than those in the other two age groups. 2) The mean sleep latency was 21.6土21.5 minutes, and was longer in female than in male. There were no significant differences in sleep latency among age groups. 3) The sleep onset time was later in the 18 - 30-year-old age group than in the other two age groups. The awakening time was earlier in the over 51-year-old age group than in the other two age groups. 4) One hundred and four subjects(38.5%) complained^difficulty falling asleep, 196 subjects (72.6%) complained fragmented sleep, and 86 subjects(31.9%) complained early morning awakening during the past two weeks. Difficulty falling asleep and fragmented sleep were more common in females than in males. 5) One hundred and seventeen subjects(43.3%) had napped during the past two weeks and there were no significant differences among age groups. 6) One hundred and sixty five subjects(61.1%) experienced daytime drowsiness during the past two weeks and there were no significant differences among age groups. 7) Ninety-one subjects(33.7%) reported nightmares, 32 subjects(11.9%) reported sleeptalking, 3 subjects(l.l%) reported sleepwalking, and 15 subjects(5.6%) reported bruxism during the past two weeks.