The Impact of Physical Activity on Disability Incidence among Older Adults in Mexico and the United States

Table 1

Sample size for outcome at time 2 for persons with no ADL limitations at time 1.

	United States
	Observed			Not observed		Total
	No ADL limitations	1 ADL limitation	2 or more ADL limitations	Death	Loss to followup
Unweighted 𝑁	9490	501	236	514	529	11270
(% within country)	(84%)	(4%)	(2%)	(5%)	(5%)	(100%)
	Mexico
	Observed			Not observed		Total
	No ADL limitations	1 ADL limitation	2 or more ADL limitations	Death	Loss to followup
Unweighted 𝑁	8907	328	326	300	568	10429
(% within country)	(85%)	(3%)	(3%)	(3%)	(5%)	(100%)

Notes: unweighted statistics; USA data included persons age 53 and older at time 2; Mexican data included persons 54 years and older at time 2; both samples include only community-dwelling persons with no ADL limitations at baseline.