Objective To survey the incidence of sleep disorders among patients with industrial injuries and analyze the relevant factors.MethodsA total of 112 depressed patients ( male 106,female 6; aged 22-79 years,course of disease 35 d-25 years) were assessed by a professional psychologist using life satisfaction index A,the type A behavior pattern scale,the Pittsburgh sleep quality index (PSQI) and the Barthel index.ResultsThe incidence of disordered sleep was 40.18％ (45/112),of whom mildly depressed patients were 34.29％,moderately depressed patients 42.86％ and severely depressed patients 85.71％.The incidence of sleep disorders increased with increasing depression severity.The incidence of disordered sleep was significantly higher among the severely depressed patients than among those mildly or moderately depressed,but there was no significant difference in incidence between moderately and mildly depressed patients.PSQI scores among the severely and moderately depressed patients were significantly higher than among those mildly depressed,but there was no statistically significant difference in average PSQI scores between the severely and moderately depressed patients.The sleep disorder group suffered significantly poorer sleep quality and took significantly longer to get to sleep.There were no significant differences in average age,educational level,marital status,social relations,family and social support,gender distribution or course of disease between the two groups.There were,however,significant differences in family income,life satisfaction,character type and disease species between the groups.ConclusionThe incidence of disordered sleep among depressed patients after industrial injury is correlated with the severity of depression,family income,life satisfaction,the type of injury and the patient's character.