Fig. 1From: Cerebral small vessel disease, cardiovascular risk factors, and future walking speed in old age: a population-based cohort studyFlowchart of study population (2001-2004 to 2010-2013). Data were collected every six years for the younger-old (60, 66, and 72 years), and every three years for the older-old (≥78 years). The older-old had three follow-up examinations, whereas in the younger-old cohort those 72 years old had two follow-up examinations at six and nine years, and those 60 and 66 years old had only one follow-up examination at six yearsBack to article page