“…Although we investigated frequency of transit and walking, our models did not estimate duration and distance of travels. Many studies reported that different facets of the built environment are related to purpose, frequency, duration, or distances of transit or walking behaviors (e.g., Antipova et al, 2011;Duncan et al, 2010;Millward et al, 2013;Mumford et al, 2011). Nevertheless, it is striking that, regardless of participants' use of SACSP near their home, the mere presence of SACSP was significantly associated with social participation and this association was significantly mediated by transit use (regardless of the purpose, duration, or distance travelled).…”