Table 2
(a) Age-standardized prevalence of ADL limitations at baseline, by country

United StatesMexico
(unweighted )(unweighted )
(weighted )(weighted )
Standardized rateStandardized rate

Percent reporting at least one ADL limitation11.5%10.6%
Percent reporting each ADL limitation:
 Walking5.2%7.5%
 Bathing5.0%5.3%
 Eating2.1%3.0%
 Transferring in/out of bed4.6%7.2%
 Toileting4.2%5.2%
Total number of ADL limitations reported:
 None88.5%89.4%
 One6.2%3.2%
 Two2.7%2.4%
 Three1.3%1.7%
 Four0.7%1.4%
 Five0.6%1.9%

(b) Age-standardized prevalence of physical activity at baseline by country and functional limitations

United StatesMexico
(unweighted )(unweighted )
(weighted )(weighted )
Standardized rateStandardized rate

Percent reporting physical activity45.9%28.6%
By number of functional limitations (at time 1)
 043.9%27.2%
 11.3%0.5%
 2 or more ADL limitations0.6%0.5%

Notes: Age standardized using the weighted average of the two countries as the standard; population 51 years and older in the USA and 52 years and older in Mexico; weighted statistics using community-dwelling population only; significant differences between countries at .