Department of Population and Family Health, College of Public Health and Medical Sciences, Jimma University, PO.Box:1104, Jimma, Ethiopia.
BMC Public Health. 2012 Aug 3;12:604. doi: 10.1186/1471-2458-12-604.
Evidence on the differential impacts of the global food crisis as it translates into chronic food insecurity locally is essential to design food security interventions targeting the most vulnerable population groups. There are no studies on the extent of chronic food insecurity or its predictors among adolescents in developing countries. In the context of increased food prices in Ethiopia, we hypothesized that adolescents in low income urban households are more likely to suffer from chronic food insecurity than those in the rural areas who may have direct access to agricultural products.
This report is based on data from the first two rounds of the Jimma Longitudinal Family Survey of Youth (JLFSY). Both adolescents and households were selected using a stratified random sampling method. A total of 1911 adolescents aged 13-17 years were interviewed on their personal experiences of food insecurity both at baseline and at year two. Multivariable logistic regression analyses were used to compare chronic adolescent food insecurity by household income, household food insecurity, and socio-demographic variables after one year of follow-up.
Overall, 20.5% of adolescents were food insecure in the first round survey, while the proportion of adolescents with food insecurity increased to 48.4% one year later. During the one year follow up period, more than half (54.8%) of the youth encountered transient food insecurity - that is, either during the first or the second round survey. During the follow up period, 14.0% of adolescents had chronic food insecurity (i.e. were food insecure at both rounds). Multivariable logistic regression analysis showed that adolescents in the urban households with low (OR = 1.69, P = 0.008) and middle (OR = 1.80, P = 0.003) income tertiles were nearly twice as likely to suffer from chronic food insecurity compared with those in high income tertile, while this was not the case in rural and semi-urban households. Female sex of adolescents (P < 0.01), high dependency ratio (P < 0.05) and household food insecurity (P < 0.001) were independent predictors of chronic adolescent food insecurity in urban, semi-urban, and rural areas, while educational status of the adolescents was negatively associated with chronic food insecurity (OR = 0.047, P = 0.002) in urban areas.
In the context of increased food prices, household income is an independent predictor of chronic food insecurity only among adolescents in the low income, urban households. Female gender, educational status of primary or less and being a member of households with high dependency ratio were independent predictors of chronic food insecurity in urban, semi-urban, and rural areas. The fact that the prevalence of chronic food insecurity increased among adolescents who are members of chronically food insecure urban households as income tertiles decreased suggests that the resilience of buffering is eroded when purchasing power diminishes and food resources are dwindling. Food security interventions should target urban low income households to reduce the level of chronic food insecurity and its consequences.
了解全球粮食危机对当地慢性粮食不安全的影响差异,对于设计针对最弱势群体的粮食安全干预措施至关重要。在发展中国家,尚无关于青少年慢性粮食不安全及其预测因素的研究。在埃塞俄比亚食品价格上涨的背景下,我们假设城市低收入家庭的青少年比农村地区的青少年更容易遭受慢性粮食不安全的困扰,因为农村地区的青少年可能可以直接获得农产品。
本报告基于吉姆马纵向家庭青年调查(JLFSY)的前两轮数据。青少年和家庭都是采用分层随机抽样方法选择的。共有 1911 名 13-17 岁的青少年在基线和两年后分别接受了个人粮食不安全经历的访谈。在一年的随访后,使用多变量逻辑回归分析比较了家庭收入、家庭粮食不安全和社会人口学变量对青少年慢性粮食不安全的影响。
总体而言,在第一轮调查中,20.5%的青少年粮食不安全,而一年后,粮食不安全的青少年比例增加到 48.4%。在一年的随访期间,超过一半(54.8%)的青少年经历了短暂性粮食不安全,即在第一轮或第二轮调查中出现了粮食不安全。在随访期间,14.0%的青少年出现慢性粮食不安全(即两轮都存在粮食不安全)。多变量逻辑回归分析显示,城市低收入(OR=1.69,P=0.008)和中等收入(OR=1.80,P=0.003)家庭的青少年患慢性粮食不安全的可能性几乎是高收入家庭的两倍,而农村和半城市家庭则并非如此。青少年的女性性别(P<0.01)、高抚养比(P<0.05)和家庭粮食不安全(P<0.001)是城市、半城市和农村地区青少年慢性粮食不安全的独立预测因素,而青少年的教育程度(OR=0.047,P=0.002)与城市地区的慢性粮食不安全呈负相关。
在食品价格上涨的背景下,收入是城市低收入家庭青少年慢性粮食不安全的唯一独立预测因素。女性性别、小学或以下教育程度和高抚养比家庭的成员是城市、半城市和农村地区青少年慢性粮食不安全的独立预测因素。在收入三分位数降低的情况下,慢性粮食不安全城市家庭的青少年慢性粮食不安全发生率增加,这表明在购买能力下降和粮食资源减少时,缓冲能力的弹性正在减弱。粮食安全干预措施应针对城市低收入家庭,以降低慢性粮食不安全的程度和后果。