Bonde J P, Hansen K S, Levine R J
Institute of Social Medicine, University of Aarhus, Denmark.
Scand J Work Environ Health. 1990 Oct;16(5):315-22. doi: 10.5271/sjweh.1778.
Welding may be detrimental to the male reproductive system. Fertility was examined in a Danish cohort of 3702 male metalworkers over a follow-up of 47 674 person-years. Occupational histories were gathered by postal questionnaires. Information on births was obtained by record linkage to the Danish Central Population Register. Among persons who had ever worked as welders, the probability of having a child was slightly reduced the year after a year of welding exposure, even after control for differences in age, birth cohort, paternal parity, birth of a child in the preceding five years, smoking, and consumption of alcoholic beverages (odds ratio 0.89, 95% confidence interval 0.83-0.97). The reduction in fertility was associated with the welding of mild steel, but not with the welding of stainless steel. These findings are consistent with results of previous studies of time to conception and semen quality in welders.
焊接可能对男性生殖系统有害。在丹麦，对3702名男性金属工人组成的队列进行了47674人年的随访，以检查其生育能力。职业史通过邮寄问卷收集。通过与丹麦中央人口登记处的记录链接获取出生信息。在曾经从事过焊接工作的人群中，即使在控制了年龄、出生队列、父亲生育次数、前五年内孩子的出生情况、吸烟和酒精饮料消费等差异后，在接触焊接一年后的次年生育孩子的概率仍略有降低（优势比为0.89，95%置信区间为0.83 - 0.97）。生育能力的降低与低碳钢焊接有关，但与不锈钢焊接无关。这些发现与先前关于焊工受孕时间和精液质量的研究结果一致。
