A novel household water insecurity scale: Procedures and psychometric analysis among postpartum women in western Kenya
A novel household water insecurity scale: Procedures and psychometric analysis among postpartum women in western Kenya
复制标题
DOI：
10.1371/journal.pone.0198591
复制
发表时间：
2018-06-08
期刊：
影响因子：
3.7
通讯作者：
Young, Sera L.
中科院分区：
文献类型：
--
作者：
Boateng, Godfred O.;Collins, Shalean M.;Young, Sera L.
我们衡量家庭一级粮食不安全的能力揭示了其在一系列身体，心理和健康结果中的关键作用。目前，没有类似的标准化工具来量化家庭一级的水不安全，这使我们无法了解其普遍性和后果。因此，我们的目标是开发和验证一个家庭水不安全的规模适用于我们的队列在肯尼亚西部。我们使用了一系列的定性技术，开发了一套初步的29个家庭水不安全问题，并在产后15个月和18个月管理这些问题，同时与一套其他调查模块。这些数据得到了用水量和储存水量以及微生物质量数据的补充。项目间和项目总的相关性进行了减少规模项目到20。探索性因素和平行分析被用来确定潜在的因素结构，一个一维规模的假设和验证性因素和双因素分析，沿着多个统计拟合指数进行测试。可靠性进行了评估，使用克朗巴赫的α和稳定性系数，其中产生的系数α为0.97，在产后15个月和18个月的稳定性系数为0.62。预测，收敛和判别有效性的最终家庭水不安全规模的基础上，粮食不安全，感知压力，人均家庭用水，时间和金钱花费获取水的关系。由此产生的量表是一个有效和可靠的工具。在这种情况下，它可以用来测试一系列假设的作用，家庭水不安全的许多身体和心理健康的结果，以确定最容易受到水不安全的家庭，并评估与水有关的干预措施的影响。为了扩大其适用性，我们鼓励努力开发一个跨文化的有效规模使用强大的定性和定量技术。
Our ability to measure household-level food insecurity has revealed its critical role in a range of physical, psychosocial, and health outcomes. Currently, there is no analogous, standardized instrument for quantifying household-level water insecurity, which prevents us from understanding both its prevalence and consequences. Therefore, our objectives were to develop and validate a household water insecurity scale appropriate for use in our cohort in western Kenya. We used a range of qualitative techniques to develop a preliminary set of 29 household water insecurity questions and administered those questions at 15 and 18 months postpartum, concurrent with a suite of other survey modules. These data were complemented by data on quantity of water used and stored, and microbiological quality. Interitem and item-total correlations were performed to reduce scale items to 20. Exploratory factor and parallel analyses were used to determine the latent factor structure; a unidimensional scale was hypothesized and tested using confirmatory factor and bifactor analyses, along with multiple statistical fit indices. Reliability was assessed using Cronbach's alpha and the coefficient of stability, which produced a coefficient alpha of 0.97 at 15 and 18 months postpartum and a coefficient of stability of 0.62. Predictive, convergent and discriminant validity of the final household water insecurity scale were supported based on relationships with food insecurity, perceived stress, per capita household water use, and time and money spent acquiring water. The resultant scale is a valid and reliable instrument. It can be used in this setting to test a range of hypotheses about the role of household water insecurity in numerous physical and psychosocial health outcomes, to identify the households most vulnerable to water insecurity, and to evaluate the effects of water-related interventions. To extend its applicability, we encourage efforts to develop a cross-culturally valid scale using robust qualitative and quantitative techniques.