Sweet J A
Demography. 1984 May;21(2):129-40.
There was an increase from 62.8 to 79.1 million households in the United States during the 1970s. The number of households increased much more rapidly than the population. This paper decomposes this growth in the number of households into components associated with changing age and martial status composition and changing age by marital status-specific propensities to form households. About one-third of the increase in the number of households was due to increased age by marital status propensity to form households, and two-thirds was due to shifts in the age by marital status distribution and population growth. The increased propensity to form households had its major impact at ages under 35, and primarily among never-married persons. The composition component had its primary impact at ages 25-44 as a result of the baby boom, and also because of the increased fractions never married and separated and divorced.
20世纪70年代，美国家庭数量从6280万户增加到7910万户。家庭数量的增长速度远远超过了人口增长速度。本文将家庭数量的增长分解为与年龄和婚姻状况构成变化以及按婚姻状况划分的特定成家倾向变化相关的组成部分。家庭数量增长的约三分之一归因于按婚姻状况划分的成家倾向随年龄增长而增加，三分之二归因于按婚姻状况划分的年龄分布变化和人口增长。成家倾向增加的主要影响发生在35岁以下年龄段，主要是从未结婚的人群。由于婴儿潮，以及从未结婚、分居和离婚比例的增加，构成部分在25至44岁年龄段产生了主要影响。
