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(a) Absolute number of aging-in-place articles (direct and indirect mention), 1980–2010; (b) proportion of aging-in-place articles relative to the total published articles, 1980–2010; (c) absolute number of categorical mentions among aging in place articles published, 1980–2010*; (d) total aging in place articles by research/policy designation. *Categorical mentions are not mutually exclusive (e.g., one manuscript may have multiple category mentions).
