Sjölin S, Hofvander Y, Hillervik C
Acta Paediatr Scand. 1977 Jul;66(4):505-11. doi: 10.1111/j.1651-2227.1977.tb07935.x.
In 1972, 298 mothers representative of the city of Uppsala in general breast fed their babies for only a brief period of time despite a clear wish to continue--36% up to 8 weeks. The most common reason for terminating breast feeding was that the "milk dried up" (66%). More precise reasons commonly mentioned were anxiety of all kinds, lack of motivation, stress, tiredness and work outside the home. It was further found that mothers who enjoyed their breast feeding, were well educated, were older than 25 years and belonged to social class 1, tended to breast feed longest.
1972年，乌普萨拉市298名具有代表性的母亲尽管明显希望继续母乳喂养，但她们只用了很短的时间——36%的母亲喂养至8周。停止母乳喂养最常见的原因是“没奶了”（66%）。通常提到的更确切原因包括各种焦虑、缺乏动力、压力、疲劳以及外出工作。进一步发现，喜欢母乳喂养、受过良好教育、年龄超过25岁且属于社会阶层1的母亲，母乳喂养的时间往往最长。
