Dehghan Habibollah, Habibi Ehsanollah, Habibi Peymaneh, Maracy Mohammad Reza
Department of Occupational Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran.
Int J Prev Med. 2013 Jun;4(6):631-40.
Physiological, anthropometrical and thermal perceptual are the most important factors affecting thermoregulation of men and women in workplaces. The purpose of this study was determining the validity of a questionnaire method for assessing women's heat strain in workplaces.
This cross-sectional study was carried out on 96 healthy women. Data were continuously collected over a period of 3 months (July-September) in 2012. Mean ± (SD) of age was found to be 31.5 ± 7.48 years, of height 1.61 ± 0.05 m, of weight 61.55 ± 10.35 kg, and of body mass index 23.52 ± 3.75 kg/m(2) in different workplaces. Heart rate and oral temperature were measured by heart rate monitoring and a medical digital thermometer, respectively. Subjects completed a draft questionnaire about the effective factors in the onset of heat strain. After collecting the questionnaires, the data were analyzed by applying Cronbach'sa calculation, factor analysis method, Pearson correlation and receiver operator characteristic curves using the SPSS 18 software.
The value for Cronbach's α was found to be 0.68. The factor analysis method on items of draft questionnaire extracted three subscale (16 variables) which they explained 63.6% of the variance. According to the results of receiver operator characteristic curve analysis, the cut-off questionnaire score for separating people with heat strain from people with no heat strain was obtained to be 17.
The results of this research indicated that this quantitative questionnaire has an acceptable reliability and validity, and a cut-off point. Therefore it could be used in the preliminary screening of heat strain in women in warm workplaces, when other heat stress evaluation methods are not available.
生理、人体测量和热感知是影响工作场所男性和女性体温调节的最重要因素。本研究的目的是确定一种问卷调查方法在评估工作场所女性热应激方面的有效性。
本横断面研究对96名健康女性进行。2012年7月至9月期间持续收集数据。不同工作场所的年龄均值±标准差为31.5±7.48岁，身高为1.61±0.05米，体重为61.55±10.35千克，体重指数为23.52±3.75千克/平方米。分别通过心率监测和医用数字温度计测量心率和口腔温度。受试者完成了一份关于热应激发作影响因素的问卷初稿。收集问卷后，使用SPSS 18软件通过应用克朗巴哈系数计算、因子分析方法、皮尔逊相关性和受试者工作特征曲线对数据进行分析。
克朗巴哈系数α值为0.68。对问卷初稿项目进行因子分析方法提取了三个子量表（16个变量），它们解释了63.6%的方差。根据受试者工作特征曲线分析结果，将有热应激者与无热应激者区分开的问卷得分临界值为17。
本研究结果表明，这种定量问卷具有可接受的信度和效度以及一个临界点。因此，当没有其他热应激评估方法时，它可用于温暖工作场所女性热应激的初步筛查。
