Living arrangements often reflect important quality-of-life indicators for elderly adults. In particular, increased income can prompt changes in household living arrangements for elderly adults. Using a differences-in-differences approach, we examine whether a supplemental income program in Mexico for adults aged 70 and older influenced household size and composition. We compare outcomes at baseline and at six-month follow-up for elderly adults in the treatment group with those in the control group that did not participate in the program. We find that household size increased by 3% in the treatment group relative to the control group. We also find a statistically significant increase in the number of girls aged 6–11 in the household, likely the granddaughters or great-granddaughters of program recipients. Increases in household size were greatest for adults aged 70–79, couples, households receiving two or more supplemental incomes, and households in the top income tercile. Household size did not increase for households of adults aged 80 and older, singles, households with only one supplemental income recipient, and households not in the top income tercile. These results suggest that when older adults have more income, they use part of this income to house their grandchildren.

中文翻译：

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墨西哥老年人的生活安排和补充收入计划。

生活安排通常反映老年人的重要生活质量指标。尤其是收入的增加会促使老年人的家庭生活安排发生变化。使用差异中的差异方法，我们研究了墨西哥针对 70 岁及以上成年人的补充收入计划是否影响了家庭规模和构成。我们比较了治疗组老年人与未参加该计划的对照组老年人在基线和六个月随访时的结果。我们发现，与对照组相比，治疗组的家庭规模增加了 3%。我们还发现家庭中 6-11 岁女孩的数量在统计上显着增加，可能是计划接受者的孙女或曾孙女。70-79 岁的成年人、夫妇、获得两个或更多补充收入的家庭以及收入最高的家庭的家庭规模增长最大。对于 80 岁及以上的成年人家庭、单身家庭、只有一名补充收入领取者的家庭以及不在最高收入三分位数范围内的家庭，家庭规模没有增加。这些结果表明，当老年人有更多的收入时，他们会用这笔收入的一部分来安置他们的孙子孙女。