Results 325 patients were distributed in the five coal bureaus in 1996.The average burden of disease was 32.55 DALY per 1,000(3915.72/121410).

• 各矿务局比较：铜川矿务局外伤性截瘫疾病负担最重，每千人口54?47 DALY，高于5 个矿务局的平均水平每千人口32?25DALY。