First Food and Nutrition Survey of the Autonomous City of Buenos Aires, 2011 - Argentina

Abstract
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General:
1) To know the food and nutritional situation of children, adolescents, women of childbearing age, mothers of children up to 6 months and older adults who reside in the City of Buenos Aires.
2) To complement and strengthen the permanent monitoring system of food and nutritional indicators carried out by the Ministry of Social Development under the framework of Law 105 of the Legislature of the City of Buenos Aires.
3) To obtain information about the use of health services and the coverage of GCBA programs.

Specific:
1) To characterize the population according to socioeconomic and demographic variables.
2) To stratify the population according to established criteria to analyze living conditions.
3) To identify the socioeconomic, demographic, nutritional, health and lifestyle factors that influence the food and nutritional situation of the target population.
4) To describe behaviors, habits and cultural factors that affect the acquisition, preparation and consumption of food at home.
5) To know the nutritional status of the population groups under study through anthropometric indicators.
6) To estimate the adequacy of the intake of macronutrients and micronutrients to the international nutritional recommendations in each of the groups studied.
7) To estimate the prevalence of risk factors for non-communicable chronic diseases.
8) To explore the different sources of information about topics related to health and nutrition used by each group studied.
9) To estimate compliance with the health controls and practices established in each age group.
10) To obtain information about the use and access of the population to the programs implemented by the GCBA.

Geographic coverage
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Sub-national coverage, only urban areas.

Analysis unit
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Individuals

Kind of data
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Sample survey data [ssd]

Sampling procedure
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The City of Buenos Aires has breakdowns by different territorial divisions (Communes, School Districts, Electoral Circumscriptions, etc.). In order to describe and compare the information within it, the survey was based on the decentralization of the City through Communes (Law No. 1,777) as these are political and administrative management units with territorial jurisdiction.

The sample design was probabilistic, with representation by conglomerates of Communes. The allocation of sample sizes was carried out in each Commune in proportion to the number of people in the population of each age group of interest that inhabited it. Within each age group, the sample was selected through a systematic design, previously ordered by Commune - Year of birth - Month of Birth.

For the preparation of the sampling frame of the age groups older than 5 years, they were selected dwellings from the samples of the "Annual Household Survey" 2 of the last 3 years (2008, 2009 and 2010) and of the "Survey of victimization, perception of safety and performance evaluation of the City's police forces of Buenos Aires "(2009) 3. In the case of the three groups comprised of children under 5 years of age, the "Live Births Statistical Reports" 4 of those born after 2006 were used as a framework.

Each sample was complemented with a selection of homes in Tenants and Villas. Previously, the figure of the sensitizer was used to corroborate the existence in the home of individuals with the necessary characteristics in each domain under study and thus "refine" the sampling frame. In Communes 1, 2, 6, 10, 12, 13 and 14, when the selected dwelling corresponded to an apartment, the sensitizer found out (whether or not the respondent was found) if there were other sampling units in the building corresponding to the domains under study. This was done with the objective of being able to have a reserve in case the sample in these communes did not reach the size of effective surveys determined a priori.

Mode of data collection
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Face-to-face paper [f2f]

摘要
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一般性目标：
1) 了解布宜诺斯艾利斯市居住的儿童、青少年、育龄妇女、6个月及以上的婴儿母亲以及老年人的食物和营养状况。
2) 补充和加强由布宜诺斯艾利斯市立法机构第105号法律框架下，社会发展部进行的食物和营养指标永久性监控系统。
3) 获取关于使用医疗服务和GCBA项目覆盖范围的信息。
具体目标：
1) 根据社会经济和人口统计学变量对人群进行特征描述。
2) 根据既定标准对人群进行分层，以分析其生活条件。
3) 识别影响目标人群食物和营养状况的社会经济、人口统计学、营养、健康及生活方式因素。
4) 描述影响家庭食物获取、准备和消费的行为、习惯和文化因素。
5) 通过人体测量指标了解研究人群的营养状况。
6) 估算各研究群体中宏量营养素和微量营养素的摄入量与国际营养建议的一致性。
7) 估算非传染性慢性疾病风险因素的患病率。
8) 探索每个研究群体使用与健康和营养相关主题信息的不同来源。
9) 估算各年龄组对建立的健康控制和实践措施的依从性。
10) 获取关于人口使用和获取GCBA实施项目的相关信息。
地理覆盖范围
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次国家覆盖范围，仅限城市地区。
分析单位
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个体
数据类型
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样本调查数据 [ssd]
抽样程序
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布宜诺斯艾利斯市按不同的地域划分（社区、学区、选举区等）进行细分。为了描述和比较其内部的信息，调查基于城市的分权化，通过社区（第1777号法律）进行，因为这些是具有地域管辖权的政治和行政管理机构。抽样设计是概率性的，以社区群体为代表性。
样本大小的分配在每个社区中按每个感兴趣年龄组的居民人数成比例进行。
在5岁以上的年龄组中，通过从过去三年（2008年、2009年和2010年）“年度家庭调查”2的样本和“布宜诺斯艾利斯市警察力量受辱、安全感知及绩效评估调查”（2009年）3中选取住宅来准备年龄组抽样框架。对于5岁以下的三组儿童，使用2006年后出生的“出生统计报告”4作为框架。
每个样本通过在租户和别墅中选取住宅进行补充。之前，使用感官指标来证实住宅中存在每个研究领域所需特征的个人，从而“精炼”抽样框架。在社区1、2、6、10、12、13和14中，当选定的住宅对应公寓时，感官指标发现（无论是否找到受访者）该建筑中是否存在对应研究领域的其他抽样单位。这是为了在样本未能达到预先确定的有效调查规模的情况下，有储备。
数据收集方式
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面对面纸质调查 [f2f]