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Characteristics of Insomniacs Having Sleep State Misperception

机译：具有睡眠状态感知障碍的失眠症患者的特征

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Previous studies have reported that insomniacs tend to have a discrepancy between nocturnal sleep length reported in a self-checked sleep diary and actigraphically recorded sleep length. However, a predictive marker for the presence of this phenomenon remains unclear. In order to clarify this issue, we calculated subjective-objective difference (SOD), using diary estimates of sleep period time (SPT) minus actigraphically measured total sleep time (TST), and investigated the relationship between SOD and descriptive measures, including the Pittsburgh Sleep Quality Index (PSQI). Participants of the present study consisted of 50 persons having subjective insomnia (mean age: 46.6 ±11.9 years; 33 males, 17 females). All the participants were divided into three groups based on SOD values (positive group, intermediate group, and negative group). The negative group showed significantly worse PSQI scores for Cl (sleep quality), C2 (sleep onset latency), C4 (sleep efficiency), and C6 (use of sleep medications), compared to the other two groups, whereas no significant difference was found in C7 (daytime dysfunction) among the three groups. The results of the present study indicate that a negative value of SOD, a measure for evaluating the severity of paradoxical insomnia, increases along with aggravation of subjective sleep disturbance among insomniacs.
机译：先前的研究报告说，失眠症患者在自我检查的睡眠日记中记录的夜间睡眠时间与按行为记录的睡眠时间之间往往存在差异。但是，尚不清楚该现象是否存在的预测标记。为了弄清这个问题，我们使用睡眠时间的日记估计值（SPT）减去按活动测量的总睡眠时间（TST）来计算主观-客观差异（SOD），并研究了SOD与描述性措施之间的关系，包括匹兹堡睡眠质量指数（PSQI）。本研究的参与者包括50位主观失眠的人（平均年龄：46.6±11.9岁;男性33位，女性17位）。根据SOD值将所有参与者分为三组（阳性组，中级组和阴性组）。阴性组与其他两组相比，其C1（睡眠质量），C2（睡眠发作潜伏期），C4（睡眠效率）和C6（睡眠药物的使用）的PSQI评分显着较差，但未发现显着差异在三组之间的C7（白天功能障碍）中。本研究的结果表明，SOD的负值（一种评估悖论性失眠严重程度的措施）随着失眠症患者主观睡眠障碍的加剧而增加。

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