Sure. datea, dateb and datec are collection dates for results resa,resb and resc(a,b,c are suffixes which reperesnt different timepoints they are collected.). When res_ ne 0 then first_dt is the date at which first result is collected and if there is single result for that subject ,then patt is 's'. If there are results collected continuoulsy at every timepoint then last_dt is the date of last time point and patt='c'. if results collected at differnt timepoints and are not continuous(suffixes a,b, c etc) then patt=I and last-dt=last time point results are collected.
... View more