11.   If positive and negative errors of the same amounts occur these will not, of course, be detected.

12.   A form letter should be completed and sent to the supplier when errors occur.

13.   If the study population is small, type II errors may occur.

14.   The enumerators were amateurs who made mistakes and sometimes misunderstood their instructions, and human errors occurred when the original schedules were copied onto the printed forms.

15.   If a validation error occurs this will be reported and the remainder of the inputs will not be validated.

16.   It is recommended that if many errors occur, the LIFESPAN Process should be shut down while the source of the errors is determined.

17.   This parameter will indicate whether an internal LIFESPAN error has occurred or an error resulting from invalid user input, or both.

18.   This parameter will indicate whether an internal LIFESPAN error has occurred or an error resulting from invalid user input or both.