Development and preliminary testing of a scenario-based instrument to measure nutrition literacy of pregnant women

IF 2.5 3区医学 Q1 NURSING

Midwifery Pub Date : 2025-09-17 DOI:10.1016/j.midw.2025.104613

Tzu-Ling Chen , Li-Ling Liao , Mi-Hsiu Wei , Yueh-Yin Fang , Chia-Hsun Wu

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引用次数: 0

Abstract

Background

Nutrition literacy (NL) during pregnancy is important for both mothers and infants. The present study aimed to develop a scenario-based instrument to measure the NL abilities of pregnant women and test the validity and reliability of this instrument.

Methods

The development of the instrument comprised six phases: (1) identification of key domains through literature review; (2) a Delphi survey; (3) development of a scenario-based test; (4) evaluation of content validity; (5) pilot test; and (6) assessment of the instrument’s psychometric properties.

Results

A convenience sample of 489 pregnant Taiwanese women was used to assess NL via a 22-item scenario-based scale across four domains: “understand”, “analyse”, “appraise”, and “apply”. Item Response Theory analysis showed that most items provided the greatest precision for respondents with low to moderate ability levels (θ = −3 to 0). Confirmatory factor analysis supported a second-order, four-factor model. Internal consistency was acceptable (Cronbach’s α = 0.78), and item-total correlations ranged from 0.31 to 0.53 (p < 0.001), indicating strong reliability.

Conclusion

The validated Nutrition Literacy Scale is psychometrically sound and suitable for research, clinical use, and future interventions to improve NL and dietary behaviours during pregnancy.

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开发和初步测试基于场景的工具，以衡量孕妇的营养素养

怀孕期间的营养素养（NL）对母亲和婴儿都很重要。本研究旨在开发一种基于情境的测量孕妇NL能力的工具，并对该工具的效度和信度进行检验。方法该仪器的开发分为六个阶段：(1)通过文献综述确定关键域；(2)德尔菲调查；(3)开发基于场景的测试；(4)内容效度评价；(5)先导试验；(6)评估仪器的心理测量特性。结果本研究采用基于情境的22项量表，在“理解”、“分析”、“评价”和“应用”四个领域对489名台湾孕妇进行了NL评估。项目反应理论分析表明，大多数项目对低至中等能力水平（θ =−3 ~ 0）的被调查者提供了最大的精度。验证性因子分析支持二阶四因子模型。内部一致性是可以接受的（Cronbach 's α = 0.78），项目-总相关性在0.31至0.53之间（p < 0.001），表明具有很强的信度。结论经验证的营养素养量表在心理测量学上是合理的，适合于研究、临床使用和未来的干预措施，以改善怀孕期间的营养素养和饮食行为。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Midwifery 医学-护理

CiteScore

4.50

自引率

7.40%

发文量

221

审稿时长

13.4 weeks

期刊介绍： Midwifery publishes the latest peer reviewed international research to inform the safety, quality, outcomes and experiences of pregnancy, birth and maternity care for childbearing women, their babies and families. The journal’s publications support midwives and maternity care providers to explore and develop their knowledge, skills and attitudes informed by best available evidence. Midwifery provides an international, interdisciplinary forum for the publication, dissemination and discussion of advances in evidence, controversies and current research, and promotes continuing education through publication of systematic and other scholarly reviews and updates. Midwifery articles cover the cultural, clinical, psycho-social, sociological, epidemiological, education, managerial, workforce, organizational and technological areas of practice in preconception, maternal and infant care. The journal welcomes the highest quality scholarly research that employs rigorous methodology. Midwifery is a leading international journal in midwifery and maternal health with a current impact factor of 1.861 (© Thomson Reuters Journal Citation Reports 2016) and employs a double-blind peer review process.