Institute for Disaster Management and Reconstruction, Sichuan University, Huanghe Middle Road Section 1, Chengdu, 610041, China.
Department of Health Behavior and Social Medicine, West China School of Public Health and West China Fourth Hospital, Sichuan University, No.16 South Renmin Road 3 Section, Chengdu, 610041, China.
BMC Public Health. 2022 Jul 16;22(1):1366. doi: 10.1186/s12889-022-13726-4.
High adherence and proper usage of micronutrient powder (MNP) influence child nutritional outcomes, yet few studies explore the role of delivery patterns. This study explores the association between MNP delivery patterns and MNP feeding behaviors among Han and minority caregivers in rural Western China.
In August 2019, a total of 1021 caregiver-child pairs were selected through a four-stage cluster sampling process. A cross-sectional survey collected information on caregiver demographics, MNP delivery patterns (channel and frequency), and MNP feeding behaviors (proper usage and adherence). Using logistic regression, we examined which delivery channels and delivery frequencies were associated with proper usage and high adherence.
The results indicated that minority caregivers had lower levels of proper MNP usage than did Han caregivers (89.2%), with Tibetan caregivers' reporting the lowest rates of adherence (32.6%). Logistic regression revealed that that township-based channel was significantly correlated with proper usage among Tibetan and Yi caregivers (Odds Ratio, OR = 2.0, p < 0.01; and OR = 3.5, p < 0.001). Overall, the township-based and home-visit channels were significantly correlated with high adherence (OR = 1.7 and OR = 2.3, respectively; p < 0.001); delivery frequency was significantly correlated with high adherence (2 months: OR = 2.2, p < 0.001 and ≤ 1 month: OR = 3.5, p < 0.001) but not correlated with proper usage among the whole sample and individual ethnic groups.
In conclusion, the study finds evidence of a correlation between MNP delivery channel and both proper usage and high adherence as well as a correlation between MNP delivery frequency and high adherence.
微量营养素粉（MNP）的高使用率和正确使用对儿童营养结局有影响，但很少有研究探讨其供应模式的作用。本研究探讨了 MNP 供应模式与中国西部农村汉族和少数民族照顾者 MNP 喂养行为之间的关系。
2019 年 8 月，通过四阶段聚类抽样过程共选择了 1021 对照顾者-儿童。采用横断面调查收集了照顾者人口统计学特征、MNP 供应模式（渠道和频率）以及 MNP 喂养行为（正确使用和依从性）的信息。采用逻辑回归分析了不同供应渠道和供应频率与正确使用和高度依从性的关系。
结果表明，少数民族照顾者 MNP 正确使用率低于汉族照顾者（89.2%），藏族照顾者的依从率最低（32.6%）。逻辑回归显示，乡镇供应渠道与藏族和彝族照顾者的正确使用显著相关（优势比，OR=2.0，p<0.01；OR=3.5，p<0.001）。总体而言，乡镇和家访两种供应渠道与高度依从性显著相关（OR=1.7 和 OR=2.3，p<0.001）；供应频率与高度依从性显著相关（2 个月：OR=2.2，p<0.001；≤1 个月：OR=3.5，p<0.001），但在全样本和各民族群体中均与正确使用无关。
综上所述，本研究发现 MNP 供应渠道与正确使用和高度依从性之间存在相关性，MNP 供应频率与高度依从性之间存在相关性。
