I am trying to create a variable that indicate presence of both children and partners in each activity using ATUS. Using with whom variable (relatew), I created dummy variables for being only with children and only with partners. Should I use activity line number “ACTLINEW” to show whether both children and partners are present in each activity? I tried to check presence of both children and partners by using this command (bysort actlinew: tab childdummy partnerdummy). It seems that there is no activity that has presence of both children and partners. Is that possible? Or should I use “WHOLINE” that shows the number of the who record for each episode?