Graceland University School of Nursing, Independence, Missouri 64050 , USA.
J Hum Lact. 2010 Aug;26(3):286-96. doi: 10.1177/0890334410365066.
The purpose of this descriptive methodological study was to develop and evaluate the psychometric properties of the Employer's Support for Breastfeeding Questionnaire (ESBQ). The convenience sample consisted of 380 business owners, managers, or supervisors from the Midwestern United States. Data were collected using Web and paper-based questionnaires from January to March 2008. Psychometric evaluation included item analysis, scale reliability, and construct validity. The ESBQ subscales had Cronbach's alphas ranging from 0.85 to 0.92. Most inter-item and item-to-total correlations were above the recommendation of 0.30. The test-retest reliability of each subscale ranged from 0.93 to 1.0. Confirmatory factor analysis supported the construct validity of the scale. The comparative fit index (CFI) and the non-normal fit index (NNFI) were 0.90 and 0.91, respectively, and the root mean square error of approximation (RMSEA) was 0.05. Findings supported the ESBQ as reliable, valid, and theoretically consistent with the theory of planned behavior.
本描述性方法研究旨在开发和评估雇主对母乳喂养支持问卷（ESBQ）的心理计量学特性。方便样本由来自美国中西部的 380 位企业主、经理或主管组成。数据于 2008 年 1 月至 3 月通过网络和纸质问卷收集。心理计量学评估包括项目分析、量表信度和结构有效性。ESBQ 分量表的克朗巴赫α系数范围为 0.85 至 0.92。大多数项目间和项目总分相关系数均高于 0.30 的建议值。每个分量表的重测信度范围为 0.93 至 1.0。验证性因子分析支持量表的结构有效性。比较拟合指数（CFI）和非正态拟合指数（NNFI）分别为 0.90 和 0.91，近似均方根误差（RMSEA）为 0.05。研究结果支持 ESBQ 具有可靠性、有效性，并且在理论上与计划行为理论一致。
