加纳农村地区基于手机的交互式语音应答系统（mIVR）监测儿童疾病的决定因素：UTAUT 模型的实证证据。
Determinants of a mobile phone-based Interactive Voice Response (mIVR) system for monitoring childhood illnesses in a rural district of Ghana: Empirical evidence from the UTAUT model.
机构信息
Department of Global and International Health, School of Public Health- Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
Department of Obstetrics and Gynaecology, Komfo Anokye Teaching Hospital, Kumasi, Ghana.
出版信息
PLoS One. 2021 Mar 11;16(3):e0248363. doi: 10.1371/journal.pone.0248363. eCollection 2021.
BACKGROUND
The use of a mobile phone-based Interactive Voice Response (mIVR) System for real time monitoring of childhood illnesses provides an opportunity to improve childhood survival and health systems. However, little is known about the factors that facilitate its use. This study sought to identify key determinants and moderators of mIVR system use among caregivers in a rural district of Ghana using the Unified Theory of Acceptance and Use of Technology (UTAUT) model.
METHODS
The mIVR system was designed to provide real-time data on common symptoms of childhood illnesses after answering several questions by caregivers with sick children. A structured questionnaire with closed questions was used to collect data from 354 caregivers of children under-five living in rural communities, four (4) months after introducing the system. Regression analysis was used to identify key determinants and moderating factors that facilitate the use of the system based on the UTAUT model.
RESULTS
A total of 101 (28.5%) caregivers had used the system and 328 (92.7%) had intention to use the mIVR system. Caregivers' level of education and household wealth were associated with use of the mIVR systems (p<0.001). Behavioural intention (BI) to use mIVR system was positively influenced by performance expectancy (PE) (β = 0.278, 95% CI: 0.207, 0.349), effort expectancy (EE) (β = 0.242, 95% CI: 0.159, 0.326) and social influence (SI) (β = 0.081, 95% CI: 0.044, 0.120). Facilitating conditions (FC) (β = 0.609, 95% CI: 0.502, 0.715) and behavioural intention (β = 0.426, 95% CI: 0.255, 0.597) had a positive influence on user behaviour (UB). Mobile phone experience and household wealth significantly moderated the effect of PE, EE, SI, and FC on behavioural intention and usage of mIVR systems.
CONCLUSION
The perceived usefulness of the mIVR system, ease of use, social influences, and facilitating conditions are key determinants of users' attitude and use of mIVR system. These relationships are significantly moderated by users' phone experience and wealth status.
背景
使用基于移动电话的交互式语音应答（mIVR）系统实时监测儿童疾病为改善儿童生存和卫生系统提供了机会。然而，对于促进其使用的因素知之甚少。本研究旨在利用接受和使用技术的统一理论（UTAUT）模型，确定加纳农村地区照顾者使用 mIVR 系统的关键决定因素和调节因素。
方法
mIVR 系统旨在通过回答生病儿童的照顾者的几个问题后，实时提供儿童疾病常见症状的数据。使用封闭式问题的结构化问卷，在引入系统四个月后，从农村社区的 354 名 5 岁以下儿童的照顾者中收集数据。根据 UTAUT 模型，回归分析用于确定促进系统使用的关键决定因素和调节因素。
结果
共有 101 名（28.5%）照顾者使用了该系统，328 名（92.7%）有使用 mIVR 系统的意愿。照顾者的教育水平和家庭财富与 mIVR 系统的使用相关（p<0.001）。使用 mIVR 系统的行为意向（BI）受到绩效期望（PE）（β=0.278，95%置信区间：0.207，0.349）、努力期望（EE）（β=0.242，95%置信区间：0.159，0.326）和社会影响（SI）（β=0.081，95%置信区间：0.044，0.120）的积极影响。便利条件（FC）（β=0.609，95%置信区间：0.502，0.715）和行为意向（β=0.426，95%置信区间：0.255，0.597）对用户行为（UB）有积极影响。手机使用经验和家庭财富显著调节了 PE、EE、SI 和 FC 对行为意向和 mIVR 系统使用的影响。
结论
mIVR 系统的感知有用性、易用性、社会影响和便利条件是用户对 mIVR 系统的态度和使用的关键决定因素。这些关系受到用户手机使用经验和财富状况的显著调节。
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