The first number calculated was the rate of retention for each troop. To calculate this number, the number of Scouts who were members of the troop during both 1999/2000 and 2000/01 was divided by the number of Scouts who were members during 1999/2000. Scouts who moved away or who became of Venturer age were excluded from the calculation. The average rate of retention was 68%. Troops ranged from retaining no one to retaining everyone. The distribution of retention rates appears in Appendix B.1. The following sections look at the effect of various variables on membership retention.