Study design: Epidemiological review. Objective: To evaluate sleep disturbances in the spinal cord injured. Setting: The Clinic for Para-and Tetraplegia, Hornbñk/Copenhagen, Copenhagen University hospital, Denmark. Methods: All patients admitted with traumatic SCI during the 20-year period 1968 ± 1987 were reviewed. The normal population consisted of 339, 222 men and 117 women. These groups were asked to ®ll in the self-administered Nordic Sleep Questionnaire (NSQ) containing 21 questions. Questions were added regarding employment, smoking, alcohol, co ee or tea consumption, height and weight. The questionnaire for SCI individuals included questions about bladder emptying method, mobility, and spasms. For the SCI population age at injury, cause of injury, neurological level, and functional class were retrieved. Results: Four hundred and eight SCI individuals, 331 men and 77 women, answered the NSQ corresponding to a response rate of 83.8%. Forty-seven per cent had a cervical cord lesion and about half of the population had a complete motor lesion. In comparison with the normal population the SCI individuals had greater di culty in falling asleep, described more frequent awakenings, slept subjectively less well, were more often prescribed sleeping pills, slept more hours, took more and longer naps, and snored more and for more years. In particular, spasms, pain, paraesthesia, and troubles with voiding were claimed to be part of the sleep problems. Conclusion: In spite of the same average age and a higher body mass index in the normal than the SCI population, the SCI individuals showed signi®cantly more sleep problems than the normal population. Spinal Cord (2001) 39, 505 ± 513
This article is part of an epidemiological study on hearing in an urban population > or = 80 years of age, and concentrates on the prevalence of hearing problems and hearing sensitivity as a function of age and gender. Prior to the study, 2915 residents aged 80+ from the Valby area in Copenhagen were selected for investigation and subdivided into two groups. The first group, comprising n = 859 subjects previously provided with HA, and the second group, resulting from an invitation mailed to n = 565 subjects, were matched according to the age and gender distribution of the population, i.e. 24% males and 76% females. Among these, only 41% at a median age of 84 years, range 80-96, accepted the invitation, being significantly younger than the non-attenders. The estimated prevalence of self, reported hearing problems ranged between 33 and 66%, increasing with increasing age. Significant differences were found in the hearing sensitivity as a function of gender, i.e. the hearing in the low-frequency area < 1 kHz is better, whereas the hearing sensitivity at > 2 kHz is significantly worse in males compared with females. The speech recognition score (SRS) was significantly higher in females compared with males, and a comparison between ears supports the finding that the right ear speech recognition score is better than the left. The study demonstrates the difficulties in obtaining reliable epidemiological data on the hearing in the elderly > or = 80 years, which represents an obstacle for the planning of appropriate hearing health services directed towards this age group, and collaborative studies are suggested in order to accumulate more knowledge.
A recently proposed Nordic Sleep Questionnaire (NSQ) comprises 26 questions concerning qualitative and quantitative aspects of the respondent's sleep habits. Its reproducibility was evaluated in 32 spinal cord injured individuals (SCI), 24 men and eight women (23-72 years), and 79 normal subjects, 23 men and 56 women (19-77 years). They completed the NSQ twice at a median interval of 15 days (range 10-26) and 27 days (range 4-103) respectively. The group of normal subjects were evenly divided into group 26, i.e. those who completed the two NSQs within 26 days, and group 27 with 27 days or more between their replies. Generally, group 27 showed no worse test-retest agreement than group 26. In addition, the respondents' answers, with a few exceptions, were reasonably stable in terms of test-retest agreement or standard deviation. The SCI group exhibited the same level of reproducibility, although they had more 'pathology' to report and thus more scope for contradicting themselves. The questions in the NSQ generally were satisfactorily reproducible. However, answers to the or dered five-point questions about sleepiness in the morning and during the daytime ought to be interpreted with caution. The same may be said about the number of minutes required to fall asleep, and the duration of daytime naps.
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