ABSTRACT
Objective:To compare the personal characteristics between the patients with paradoxical insomnia and the patients with primary insomnia or the normal sleepers.Methods:A case-control study with the proportion at 1∶1∶1 was carried out.The patients with paradoxical insomnia were diagnosed in Sleep Medicine Center of West China Hospital of Sichuan University between March 2013 and December 2013.A case of paradoxical insomnia was matched with two controls:a primary insomnia patient and a normal sleeper.A total of 63 matched cases were collected.A face-to-face survey was conducted by using the following scales:General Data Scale and Eysenck Personality Questionnaire (EPQ).Results:The average scores of psychoticism,extraversion,and neuroticism for paradoxical insomnia cases were (52.1±10.2),(49.6±9.8),and (56.0±12.0),respectively.In general,31.7% of paradoxical insomnia patients had psychoticism or psychoticism tendency in their personality,which were more obvious than those in primary insomnia patients (7.9%) (x2=l 1.228,p0.0125).Conclusion:The personal characteristics for paradoxical insomnia patients did not reached obviously abnormal level.However,their psychoticism tendency,extroversion tendency and neuroticism tendency needed to be paid attention.