Selection criteria for the sample of parents with at least one ADL or IADL limitation

	Sample & Sample restrictions	N of focal persons	N of focal person-child dyad
Restriction A	Focal person age25+ who have a biological child 25+ (RT13)	4,608	10,751
Restriction B	A+ children Not in an institution for 2013	4,587	10,653
Restriction C	B + focal person and children in the main PSID sample in 2011	3,603	7,058
Restriction D	C + focal person and children Not in an institution in 2011	3,561	6,939
Restriction E	D + focal person aged 55 and older in 2013	2,669	5,518
Restriction F	E + focal person at least one ADL or IADL limitation	830	1,835
Restriction G	F + non-missing information on time-transfer receipt from children (RT13)	815	1,784
Analysis Sample	G + non-missing information on proximity in 2011 (block-level)	810	1,767