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Table 2 The mental health status of high school students

From: Core self-evaluation, mental health and mobile phone dependence in Chinese high school students: why should we care

  Normal Mild abnormal Moderate abnormal Severe abnormal Total abnormal
Students in grades 7–9 (n = 832) 503 (60.5) 245 (29.4) 71 (8.5) 13 (1.6) 329 (39.5)
Students in grades 10–12(n = 805) 434 (53.9) 307 (38.1) 62 (7.7) 2 (0.2) 371 (46.1)
χ2 20.281
P 0.000