Ravelli G P, Belmont L
Am J Epidemiol. 1979 Jan;109(1):66-70. doi: 10.1093/oxfordjournals.aje.a112660.
The authors analyzed the prevalence of obesity by family size and birth order for a total population of over 280,000 19-year-old Dutch males, who were born between 1944 and 1947 and who were from one- to five-child families. Obesity was defined by a relative weight index, 120% or more of the standard of weight for height. Overall obesity prevalence was 1.83%; sons of manual workers were more prone to obesity than sons of non-manual workers. Individuals from one-child families (only children) were uniquely at risk for obesity, particularly in the non-manual social class. This result was similar to reported findings for childhood obesity.
作者分析了家庭规模和出生顺序对28万多名19岁荷兰男性的肥胖患病率的影响，这些男性出生于1944年至1947年之间，来自有一至五个孩子的家庭。肥胖是通过相对体重指数来定义的，即身高体重标准的120%或更高。总体肥胖患病率为1.83%；体力劳动者的儿子比非体力劳动者的儿子更容易肥胖。独生子女家庭的个体（独生子）尤其有肥胖风险，特别是在非体力社会阶层。这一结果与报道的儿童肥胖研究结果相似。
