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南非城郊非正规住区女性照护者的饮食多样性和充足性。

Dietary diversity and adequacy of women caregivers in a peri-urban informal settlement in South Africa.

机构信息

Vaal University of Technology, Centre of Sustainable Livelihoods, Vanderbijlpark, South Africa.

出版信息

Nutrition. 2011 Apr;27(4):420-7. doi: 10.1016/j.nut.2010.05.013. Epub 2010 Aug 5.

Abstract

OBJECTIVE

Simple measures reflecting dietary quality are preferred for assessment of dietary intakes in low-income communities, e.g. dietary diversity that reflects a healthy, varied, nutritious diet, associated with nutrient adequacy. A strong association between household income and food access suggests dietary diversity assessment as one of the indicators of household food security. The aim of this study was to assess the food security situation of black women in an informal settlement by exploring their food access capabilities through dietary diversity measures and the coping strategies they employ to cope with poverty and hunger.

METHODS

A randomly selected sample of black women living in an informal settlement completed a pretested socio-demographic questionnaire (socio-economic circumstances) and validated questionnaires (1-wk quantified food frequency questionnaire: diversity measures; 24-h recall: nutrient intake; Cornell Hunger Scale: coping strategies). Food variety scores and food group diversity scores were calculated from frequency analyses for all foods and food groups. Nutrient adequacy ratios for various nutrients and the mean adequacy ratio for their diet were calculated. Relationships between dietary diversity and nutritional adequacy were investigated with Pearson correlations. Food variety score cut points were tested for sensitivity and specificity against nutritional adequacy.

RESULTS

Intakes were deficient for all nutrients except carbohydrates. Individual mean ± SD nutrient adequacy ratios ranging between 0.15 ± 0.18 and 0.95 ± 0.19 confirmed the poor dietary quality. Zero to 40 individual foods were consumed, but the mean ± SD food variety score was only 3.17 ± 1.21, indicating low food diversity, as did the low dietary diversity score (2.82 ± 0.99) using 0 to 6 food groups.

CONCLUSIONS

Limited food access and food variety in poor households resulted in inadequate nutrient intakes (low nutrient adequacy ratios), confirmed by poor dietary diversity (food variety score and food group diversity score). Dietary diversity assessment can successfully replace traditional dietary assessment tools in poverty-stricken or low-income communities where quick assessments are often required to assess the greatest need.

摘要

目的

在评估低收入社区的饮食摄入量时,优先考虑反映饮食质量的简单措施,例如饮食多样性,反映健康、多样化、有营养的饮食,与营养素充足有关。家庭收入与食物获取之间的密切关系表明,饮食多样性评估是家庭粮食安全的指标之一。本研究的目的是通过饮食多样性措施评估一个非正规住区黑人妇女的粮食安全状况,并探讨她们的食物获取能力,以及她们为应对贫困和饥饿而采用的应对策略。

方法

随机抽取居住在非正规住区的黑人妇女样本,填写一份预先测试的社会人口学问卷(社会经济状况)和一份经过验证的问卷(1 周定量食物频率问卷:多样性措施;24 小时回忆:营养素摄入;康奈尔饥饿量表:应对策略)。对所有食物和食物组进行频率分析,计算食物种类得分和食物组多样性得分。计算各种营养素的营养素充足率和饮食的平均充足率。用 Pearson 相关系数研究饮食多样性与营养充足性之间的关系。测试食物种类得分的敏感性和特异性,以评估其对营养充足性的影响。

结果

除碳水化合物外,所有营养素的摄入量均不足。个体平均±标准差营养素充足率在 0.15±0.18 至 0.95±0.19 之间,证实了饮食质量差。零到 40 种个体食物被食用,但平均±标准差食物种类得分仅为 3.17±1.21,表明食物多样性低,而使用 0 到 6 种食物组的饮食多样性得分(2.82±0.99)也较低。

结论

贫困家庭的食物获取有限且种类单一,导致营养素摄入量不足(低营养素充足率),这与饮食多样性差(食物种类得分和食物组多样性得分)相符。在贫困或低收入社区,快速评估往往是评估最大需求的必要手段,因此饮食多样性评估可以成功替代传统的饮食评估工具。

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