The Karolinska Sleepiness Scale (KSS) is frequently used to study sleepiness in various contexts. However, it exists in two versions, one with labels on every other step (version A), and one with labels on every step (version B) on the 9-point scale. To date, there are no studies examining whether these versions can be used interchangeably. The two versions were here compared in a 24 hr wakefulness study of 12 adults. KSS ratings were obtained every hour, alternating version A and B. Results indicated that the two versions are highly correlated, do not have different response distributions on labeled and unlabeled steps, and that the distributions across all steps have a high level of correspondence (Kappa = 0.73). It was concluded that the two versions are quite similar.

中文翻译：

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比较卡罗林斯卡嗜睡量表 (KSS) 的两个版本

Karolinska 嗜睡量表 (KSS) 经常用于研究各种情况下的嗜睡。但是，它存在两个版本，一个在 9 点量表上每隔一步（版本 A）带有标签，另一个在每个步骤（版本 B）上带有标签。迄今为止，还没有研究检查这些版本是否可以互换使用。在对 12 名成年人进行的 24 小时觉醒研究中对这两个版本进行了比较。每小时获得一次 KSS 评级，交替版本 A 和 B。 结果表明两个版本高度相关，在标记和未标记步骤上没有不同的响应分布，并且所有步骤的分布具有高度的对应性（Kappa = 0.73）。得出的结论是，这两个版本非常相似。