MMWR Morb Mortal Wkly Rep. 2017 May 26;66(20):547. doi: 10.15585/mmwr.mm6620a9.
Overall, the percentage of adults aged ≥18 years that walked as a method of transportation increased from 29.4% in 2005 to 32.5% in 2015. A similar pattern was observed for adults residing in metropolitan locations (31.2% to 34.1%) but there was no change for those residing in nonmetropolitan locations (22.4% to 22.2%). Regardless of year, adults residing in metropolitan locations were more likely to have walked as a method of transportation than were adults residing in nonmetropolitan locations.
总体而言,年龄≥18岁的成年人将步行作为出行方式的比例从2005年的29.4%上升至2015年的32.5%。居住在大都市地区的成年人也呈现出类似的模式(从31.2%升至34.1%),但居住在非大都市地区的成年人这一比例没有变化(从22.4%降至22.2%)。无论在哪一年,居住在大都市地区的成年人比居住在非大都市地区的成年人更有可能将步行作为出行方式。