Canning Patricia, Courage Mary L, Frizzell Lynn M, Seifert Tim
Centre of Excellence for Children and Adolescents with Special Needs and the Faculty of Education, Memorial University, St. John's, NL, Canada.
Int J Pediatr Obes. 2007;2(1):51-7. doi: 10.1080/17477160601124613.
To determine whether trends of increasing overweight and obesity reported for older children and adults are evident in Canadian preschoolers.
A sample of 3857 preschool-aged children (51.1% boys) in the Province of Newfoundland and Labrador, born in 1984 and measured in 1987-1989, was selected from government archival records. The sample of 4161 children (50.1% boys), born in 1997 and measured in 2000-2002, was obtained from regional health authority records. Body mass index (BMI) was calculated using heights and weights measured by nurses. Overweight and obesity prevalence was estimated according to the International Obesity Task Force (IOTF) and the Centres for Disease Control (CDC) methods.
Combined rates of overweight and obesity were significantly higher in preschoolers born in 1997 (25.6% IOTF and 36.0% CDC) than in 1984 (16.9% IOTF and 25.1% CDC), when levels were already high. There were some differences between sexes and classification systems.
The relatively rapid rise in overweight and obesity in children as young as 3.5 years, in little more than a decade, underscores the immediate need for monitoring, and implementation of effective interventions. Overweight and obesity in preschool children is not new, but has become increasingly prevalent, and requires population-based strategies.
确定在大龄儿童和成年人中报告的超重和肥胖增加趋势在加拿大学龄前儿童中是否明显。
从政府档案记录中选取了3857名1984年出生、1987 - 1989年进行测量的纽芬兰和拉布拉多省学龄前儿童样本（男孩占51.1%）。4161名1997年出生、2000 - 2002年进行测量的儿童样本（男孩占50.1%）来自地区卫生当局记录。体重指数（BMI）通过护士测量的身高和体重计算得出。超重和肥胖患病率根据国际肥胖特别工作组（IOTF）和疾病控制中心（CDC）的方法进行估算。
1997年出生的学龄前儿童超重和肥胖合并率（IOTF为25.6%，CDC为36.0%）显著高于1984年出生的儿童（IOTF为16.9%，CDC为25.1%），而1984年时超重和肥胖水平已较高。不同性别和分类系统之间存在一些差异。
在短短十多年间，年仅3.5岁儿童的超重和肥胖率相对迅速上升，这凸显了立即进行监测以及实施有效干预措施的必要性。学龄前儿童超重和肥胖并非新现象，但已日益普遍，需要基于人群的策略。
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