Least square means for the associations between the four psychiatric groups of comorbid symptoms (comorbid), posttraumatic symptoms alone (PTSS), depressive symptoms alone (depressive), or neither; and a) cancer-related symptoms severity (MDASI-Symptom Severity), cancer-related symptoms interference (MDASI-Interference), fatigue (BFI), and sleep disturbances (PSQI). +, denotes excluding “sadness” and “distress” items. *, denotes a significant difference from the comorbid group at P<0.05; **, significant difference from the neither PTSS nor depressive symptom group at P<0.05.