Researchers affiliated with the Harvard Pop Center have authored a paper based on research from the Health and Aging in Africa: a Longitudinal Study of an INDEPTH Community in South Africa (HAALSI) study that finds that older South African men had 30% higher odds than women of being limited when it came to performing activities of daily living (ADLs), and that this cohort in South Africa (men and women) did not perform physically as well as those in other low- and middle-income countries (LMICs) that were evaluated in sister studies. The paper was published in the Journals of Gerontology Series B.