International Food Policy Research Institute, Washington, DC, United States of America.
Oxford Policy Management, Oxford, England, United Kingdom.
PLoS One. 2019 Sep 6;14(9):e0222090. doi: 10.1371/journal.pone.0222090. eCollection 2019.
Although agriculture is an important source of food and income for food expenditures, women's involvement in the agricultural cropping production process could increase their work load and reduce their BMI. Using three waves of the Tanzania National Panel Survey, we investigate the extent to which time spent in agricultural crop production affects women and men's nutritional status among non-overweight individuals (age 20-65). We also test whether the impact of agricultural cropping work on nutritional status is modified by access to agricultural equipment, and whether gender differences exist. The study finds that time spent in agricultural cropping work is negatively associated with BMI for non-overweight individuals, albeit of small magnitude, and this finding is consistent across different crop production processes. This suggests that agricultural interventions should not ignore the implications of increasing work intensities on nutrition. While increased agricultural production could improve nutritional status by increasing agricultural income and food, the gains in nutritional status could be offset by an increase in work effort of doing agricultural work. Our results suggest that it is possible that access to equipment reduced effort for one production activity, but increased work for other activities in the production process, such as in harvesting. Furthermore, we find that the BMI of women in households with a hand powered sprayer is positively related to time spent in weeding, fertilizing, and non-harvest activities, while it is negatively correlated for men. It is possible that access to a hand powered sprayer may have helped reduce women's work, for example, in weeding, while this was not the case for men's work such as in ridging and fertilizing. Further disaggregation of agricultural activities in the dataset would have been helpful to provide more insights on the gender roles.
虽然农业是食物支出的重要食物和收入来源,但妇女参与农业作物生产过程可能会增加她们的工作量并降低其 BMI。本文利用坦桑尼亚国家面板调查的三波数据,研究了农业作物生产时间对非超重个体(年龄在 20-65 岁之间)的女性和男性营养状况的影响程度。我们还测试了农业作物工作对营养状况的影响是否因获得农业设备而有所改变,以及是否存在性别差异。研究发现,对于非超重个体而言,农业作物生产时间与 BMI 呈负相关,尽管这种相关性的幅度较小,但在不同的作物生产过程中都存在这种关系。这表明农业干预措施不应忽视增加工作强度对营养的影响。虽然增加农业生产可以通过增加农业收入和食物来改善营养状况,但在从事农业工作的过程中,工作强度的增加可能会抵消营养状况的改善。我们的结果表明,获得设备可能会减少一种生产活动的劳动投入,但会增加生产过程中其他活动(如收割)的工作投入。此外,我们发现,拥有手动喷雾器的家庭中的女性的 BMI 与其在除草、施肥和非收获活动上花费的时间呈正相关,而对于男性则呈负相关。获得手动喷雾器可能有助于减少女性的劳动投入,例如在除草方面,但男性的劳动投入则不受影响,例如在垄作和施肥方面。在数据集中进一步细分农业活动本可以提供更多关于性别角色的见解。