New York State Department of Health, Center for Environmental Health, 547 River St., Troy, NY 12180, USA.
Int Arch Occup Environ Health. 2011 Aug;84(6):601-8. doi: 10.1007/s00420-010-0585-4. Epub 2010 Oct 21.
This study was designed to determine whether licensed female cosmetologists with a low birthweight child were more likely to perform specific occupational tasks during pregnancy than cosmetologists who had a normal weight child. We also investigated certain salon characteristics in relation to low birthweight status.
This nested case-control study followed-up a positive association of low birthweight children among cosmetologists found in a retrospective cohort study previously reported. Cases were cosmetologists with children born between 1997 and 2003 weighing <2,500 g, selected from the retrospective cohort study. Controls were cosmetologists with full-term children who weighed >2,500 grams at birth, frequency matched on year of birth of the child. A mailed questionnaire gathered information on potential confounders and detailed exposure information about work environment and occupational tasks of cosmetologists. Frequency of product use was dichotomized into daily/less than daily for each task. Number of hours worked per week was also considered. Birth certificate data were used for information on some potential confounders and birthweight. Using logistic regression, adjusted odds ratios (OR) and 95% confidence intervals (95% CI) were obtained.
A total of 125 (30%) cases and 158 (35%) controls agreed to participate. Responders and non-responders were similar on birthweight and most demographic characteristics. None of the specific cosmetology tasks studied were associated with low birthweight. Working in a salon located in a house/building with other businesses was associated with having a low birthweight child [OR = 2.20, 95% CI (1.21, 4.02)].
We did not find any associations between specific tasks of cosmetologists and low birthweight.
本研究旨在确定体重较低的女性美容师与体重正常的美容师相比，在怀孕期间是否更有可能从事特定的职业任务。我们还调查了与低出生体重有关的某些沙龙特征。
本巢式病例对照研究是对之前报道的回顾性队列研究中发现的美容师低出生体重的阳性关联进行随访。病例是在 1997 年至 2003 年间出生体重<2500g 的美容师的子女，从回顾性队列研究中选择。对照是足月出生体重>2500 克的美容师的子女，按出生年份与病例进行频数匹配。邮寄问卷收集潜在混杂因素的信息以及美容师工作环境和职业任务的详细暴露信息。每种任务的产品使用频率分为每日/每日以下。每周工作小时数也被考虑在内。出生证明数据用于一些潜在混杂因素和出生体重的信息。使用逻辑回归，得出调整后的比值比（OR）和 95%置信区间（95%CI）。
共有 125 名（30%）病例和 158 名（35%）对照同意参与。应答者和未应答者在出生体重和大多数人口统计学特征方面相似。研究中没有一项特定的美容任务与低出生体重有关。在位于与其他企业共用房屋/建筑物的沙龙工作与低出生体重儿童有关[OR=2.20，95%CI（1.21，4.02）]。
我们没有发现美容师特定任务与低出生体重之间存在任何关联。
