Shemilt I, Harvey I, Shepstone L, Swift L, Reading R, Mugford M, Belderson P, Norris N, Thoburn J, Robinson J
School of Social Work & Psychosocial Studies, University of East Anglia, Norwich, UK.
Child Care Health Dev. 2004 Sep;30(5):413-27. doi: 10.1111/j.1365-2214.2004.00453.x.
To measure the health, educational and social impacts of breakfast club provision in schools serving deprived areas across England.
A cluster randomized controlled trial and an observational analysis.
England, the UK.
funding to establish a school-based breakfast club vs. control (no funding).
Intention to treat analysis showed improved concentration (Trail Making Test Part A) amongst the intervention group at 3 months. Fewer pupils within the intervention group reported having skipped classes within the last month and fewer pupils within the intervention group reported having skipped 1 or more days of school within the last month at 1 year. Observational analysis at 1 year showed a higher proportion of primary-aged breakfast club attendees reported eating fruit for breakfast in comparison to non-attendees. A higher proportion of breakfast club attendees had borderline or abnormal conduct and total difficulties scores (primary-aged pupils) and prosocial score (secondary-aged pupils).
Analyses revealed a mixed picture of benefit and apparent disbenefit. This study illustrated the challenges of evaluating a complex intervention in which the evaluators had less control than is usual in randomized trials over recruitment, eligibility checking and implementation. If the impact of new policy initiatives is to be assessed using the most robust forms of evaluation, social policy needs to be organized so that evaluations can be constructed as experiments. This is likely to prove most difficult where the perceived value of implementing an intervention rapidly is high.
衡量在英格兰贫困地区学校提供早餐俱乐部对健康、教育和社会方面的影响。
一项整群随机对照试验和一项观察性分析。
英国英格兰。
提供资金以设立校内早餐俱乐部与对照组(无资金)。
意向性分析表明,干预组在3个月时注意力得到改善(连线测验A部分)。在1年时,干预组中报告上个月逃课的学生较少,且干预组中报告上个月缺课1天或以上的学生也较少。1年时的观察性分析显示,与未参加早餐俱乐部的学生相比,参加早餐俱乐部的小学年龄段学生中,报告早餐吃水果的比例更高。参加早餐俱乐部的学生中,有更高比例的学生存在边缘性或异常行为以及总体困难得分(小学年龄段学生)和亲社会得分(中学年龄段学生)。
分析显示出利弊参半的情况。本研究说明了评估一项复杂干预措施的挑战,在这种干预措施中,评估者对招募、资格审查和实施的控制比随机试验中通常的情况要少。如果要用最有力的评估形式来评估新政策举措的影响,就需要对社会政策进行组织,以便能够将评估构建为实验。在迅速实施一项干预措施的预期价值很高的情况下,这可能会被证明是最困难的。