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. 2014 Jul 7;10:1223–1234. doi: 10.2147/NDT.S61568

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© 2014 Zhang et al. This work is published by Dove Medical Press Limited, and licensed under Creative Commons Attribution – Non Commercial (unported, v3.0) License

The full terms of the License are available at http://creativecommons.org/licenses/by-nc/3.0/. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed.

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Comparisons of EPQ scores among five grades.

Notes: (A) EPQ-E scores. EPQ-E scores of grade 2 compared to other groups, **P<0.01; ***P<0.001; EPQ-E scores of grade 3 compared to other grades, ^##P<0.01. (B) EPQ-P scores. EPQ-P scores of grade 1 compared to other grades, *P<0.05; ***P<0.001; EPQ-P scores of grade 2 compared to other grades, ^###P<0.001. (C) EPQ-N scores. EPQ-N scores of grade 1 compared to other grades, **P<0.01; ***P<0.001. EPQ-N scores of grade 2 compared to grade 4, ^##P<0.01. (D) EPQ-L scores. EPQ-L scores of grade 1 compared to grade 4, *P<0.05.

Abbreviations: EPQ, Eysenck Personality Questionnaire; EPQ-E, EPQ Extraversion subscale; EPQ-L, EPQ Truthfulness subscale; EPQ-N, EPQ Neuroticism subscale; EPQ-P, EQP Psychoticism subscale; SD, standard deviation.