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使用分位数回归分析青少年水果和蔬菜摄入量的决定因素。

Determinants of fruit and vegetable intake in adolescents using quantile regression.

机构信息

Programa de Pós-Graduação em Nutrição em Saúde Pública, Faculdade de Saúde Pública, Universidade de São Paulo, São Paulo, SP, Brasil.

出版信息

Rev Saude Publica. 2011 Jun;45(3):448-56. doi: 10.1590/s0034-89102011005000023. Epub 2011 Apr 15.

Abstract

OBJECTIVE

To analyze fruit and vegetable intake in adolescents and to identify associated factors.

METHODS

A population-based cross-sectional study was conducted with a representative sample of 812 adolescents of both sexes in the city of São Paulo, Southeastern Brazil, in 2003. Food consumption was measured with the 24-hour dietary recall. Fruit and vegetable intake was described in percentiles. Quantile regression models were used to investigate the association between this intake and explanatory variables.

RESULTS

Of all adolescents interviewed, 6.4% consumed the minimum recommendation of 400 g/day of fruits and vegetables and 22% did not consume any type of fruits and vegetables. According to quantile regression models, adjusted for energy intake, age group and sex, per capita household income and head of household's level of education were positively associated with fruit and vegetable intake, whereas smoking habit showed a negative association. Income was significantly associated with lower intake percentiles (p20 to p55); smoking, with intermediate percentiles (p45 to p75); and head of household's level of education, with higher percentiles (p70 to 95).

CONCLUSIONS

Fruit and vegetable intake among adolescents of São Paulo was below the Ministry of Health's recommendations and it is influenced by per capita household income, head of family's level of education and smoking habit.

摘要

目的

分析青少年水果和蔬菜的摄入量,并确定相关因素。

方法

2003 年,在巴西东南部城市圣保罗进行了一项基于人群的横断面研究,该研究对代表性的 812 名男女青少年进行了调查。采用 24 小时膳食回顾法来测量食物的摄入量。以水果和蔬菜的摄入量的百分比来描述摄入量。采用分位数回归模型来研究该摄入量与解释变量之间的关系。

结果

在所有接受采访的青少年中,有 6.4%的人摄入了最低推荐量 400 克/天的水果和蔬菜,而有 22%的人根本不吃任何种类的水果和蔬菜。根据调整了能量摄入、年龄组和性别因素后的分位数回归模型,家庭人均收入和家庭主要负责人的教育水平与水果和蔬菜的摄入量呈正相关,而吸烟习惯则呈负相关。收入与较低的摄入量百分位数(p20 到 p55)显著相关;吸烟与中等摄入量百分位数(p45 到 p75)相关;而家庭主要负责人的教育水平与较高的摄入量百分位数(p70 到 p95)相关。

结论

圣保罗青少年的水果和蔬菜摄入量低于卫生部的建议,并且受到家庭人均收入、家庭主要负责人的教育水平和吸烟习惯的影响。

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