I am in favour of standardisation and integration of OTP and TSFP where this is possible.

There may be local rules regarding definitions for different exit types. Default is often defined as absent for two visits. Sometimes vists are weekly. Sometimes vists are fortnightly. In better run program we pick up DNA (did not attend) for the first absence and speak to mothers from the same village and / or speak with the CBV / CHW to see what has happened and to see if we can avoid default.

Note : When you have an absence for two visits you only have a "possible default". The reason for default could be death. In that case you have a death exit. This is one reason why defaulter follow-up is used. The other is to see if there are common reasons for default that can be adressed by the program.

I hope this is of some use.