Howerton Mollie W, Bell B Sue, Dodd Kevin W, Berrigan David, Stolzenberg-Solomon Rachael, Nebeling Linda
Department of Oncology, Johns Hopkins School of Medicine, Baltimore, Maryland.
J Nutr Educ Behav. 2007 Jul-Aug;39(4):186-96. doi: 10.1016/j.jneb.2007.01.010.
To evaluate, through study- and individual-level analyses of data from 7 studies, the effectiveness of school-based nutrition interventions on child fruit and vegetable (FV) consumption.
To find original studies on school-based nutrition interventions, the authors searched electronic databases from 1990 to 2002. First authors of the 13 eligible studies were contacted to request their data. Data from 7 studies were received for inclusion in this pooled analysis.
Schools.
8156 children were matched from pretest to posttest. Participants were primarily elementary school-aged (75.5%) and white (66%), and 50.4% were males.
Net FV difference and net FV relative change (%).
Data were analyzed at both the study and individual levels. A fitted multivariable fixed-effects model was used to analyze the role of potential covariates on FV intake. Statistical significance was set at alpha = .05.
At the individual level, the net difference in FV consumption was 0.45 (95% CI 0.33-0.59) servings; the net relative change was 19% (95% CI 0.15-0.23) servings.
School-based nutrition interventions produced a moderate increase in FV intake among children. These results may have implications for chronic disease prevention efforts, including cardiovascular disease and cancer.
通过对7项研究的数据进行研究层面和个体层面的分析，评估以学校为基础的营养干预措施对儿童水果和蔬菜（FV）摄入量的有效性。
为了找到关于以学校为基础的营养干预措施的原始研究，作者检索了1990年至2002年的电子数据库。联系了13项符合条件的研究的第一作者以索取他们的数据。收到了7项研究的数据并纳入本次汇总分析。
学校。
8156名儿童在预测试和后测试之间进行了匹配。参与者主要是小学年龄段（75.5%），白人（66%），50.4%为男性。
FV净差异和FV净相对变化（%）。
在研究层面和个体层面都对数据进行了分析。使用拟合的多变量固定效应模型来分析潜在协变量对FV摄入量的作用。统计学显著性设定为α = 0.05。
在个体层面，FV摄入量的净差异为0.45份（95%置信区间0.33 - 0.59）；净相对变化为19%（95%置信区间0.15 - 0.23）份。
以学校为基础的营养干预措施使儿童的FV摄入量适度增加。这些结果可能对包括心血管疾病和癌症在内的慢性病预防工作具有启示意义。
