Newcombe R G
J Epidemiol Community Health. 1982 Dec;36(4):306-9. doi: 10.1136/jech.36.4.306.
The relationship between obesity, age, and parity was studied in 35 556 Cardiff resident parturients in the years 1965-79. The effects of age and parity on obesity were both real but were considerably confounded with each other. The aging effect differed among social classes while the effect of parity depended on smoking habits.
1965年至1979年间,对35556名加的夫居民产妇的肥胖、年龄和产次之间的关系进行了研究。年龄和产次对肥胖的影响都是真实存在的,但二者之间存在相当大的混淆。年龄效应在不同社会阶层中有所不同,而产次效应则取决于吸烟习惯。