Work by HwaJung Choi, Bob Schoeni, Kenneth Langa, and Michele Heisler is cited in this piece on the residential proximity of many families, with many adult children living within 20 miles of their mothers. Education and income are factors on how far people move from their parents, as are geography, marriage, and race. Proximity may also depend on need – in the U.S., grown children are the single greatest source of care for elderly parents. Choi et al found that when parents had heart problems, children were more likely to live close by, and parents were less likely to live in a nursing home.

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