RELIABILITY OF DATA

SCRUTINY

• Supervisor – 100% of each interviewer’s work.
• Corrdinators: – 10% of each interviewer’s work.
• Analysis after dispatch – 1st lot rigorously.

MULTIPLES BACK CHECK

• Monithoring sample quota on daily basis to ensure  that desired quota of successful  interviewers achieved
• On a standard basis 30% of ll our fiedwork is back-checked of which 20%  is done through telephone  and 10% are done through personal visit or accompanied  check by the projet supervisor .
• Random telephonic back checks

DATA CHECK

• Logical checks in the punching program
• 10%  of the punched questionnaires are randomly checks for possible punching errors. If any error is spotted , a much larger proportion of questionnaires are then checked