duration_mth¶

duration_mth(t)[source]¶

Duration of the selected model point at t in months

Indicates how many months the policies have been in-force at t. The initial value at time 0 is read from the duration_mth column in model_point_table through model_point(). Increments by 1 as t increments. Negative values of duration_mth() indicate future new business policies. For example, If the duration_mth() is -15 at time 0, the model point is issued at t=15.