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. Author manuscript; available in PMC: 2018 Jan 1.
Published in final edited form as: Stroke. 2016 Dec 6;48(1):43–48. doi: 10.1161/STROKEAHA.116.013554

Figure 1. Timing of depressive symptom, confounder, and stroke assessments for participants enrolled in 1989.

Figure 1

The first observation for participants enrolled in 1989 contains stroke assessment from 1992, changes in depressive symptoms from 1990–1991, and time-constant and –varying confounders from 1989. Their cumulative prior exposure to depressive symptoms is defined only by 1989. Assuming they remain uncensored, their final observation contains 1999 strokes assessment, 1997–1998 depressive symptom change, and cumulative prior exposure to depressive symptoms from 1989 until 1996. Their time-constant are from 1989, and time-varying confounders are from 1996.