Illustration of Y
(k,s) coding scheme. Illustration of Y
(k,s) coding scheme at a fixed time t for a subject with (A) LOS = 3, (B) LOS = 5, (C) LOS = 7, and (D) LOS = 9. Black boxes represent Y
(k,s) = 1, grey boxes denote Y
(k,s) = 0, and boxes with ∗ represent cases where Y
(k,s) is undefined. In general, an observation is undefined if LOS ≤s.