Understanding Society User Support

Message from Tina Haux:
I am getting in touch as I am doing a project together with Lucinda using the MCS on contact and parenting before and after separation and we are looking derive a variable capturing the length of separation of couples. I seem to remember that Chiara Pronzato did something similar for the BHPS data with John Ermisch and I was wondering whether it would be possible to get more information on how this variable has been derived to see whether it would make sense to do something similar with the MCS data.