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Fig. 4 | Sleep Science and Practice

Fig. 4

From: Quality of life, depression, and productivity of city government employees in Japan: a comparison study using the Athens insomnia scale and insomnia severity index

Fig. 4

Receiver operating characteristic (ROC) analysis of the Athens Insomnia Scale (AIS) item scores for the comparison of short sleep duration and sleepiness. AIS_4, fourth AIS item: total sleep duration; AIS_6, sixth AIS item: problems with sense of well-being; AIS_8, eighth AIS item: sleepiness during the day

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