CATI vs CAWI vs CAPI data collection

CATI CAWI CAPI methodology comparison.
Computer assisted telephone interview vs. computer assisted web interview vs. computer assisted personal interview

CATI CAWI CAPI

Population Coverage

Cost per interview HIGH LOW MEDIUM-HIGH

Initial investment HIGH LOW MEDIUM-HIGH

Reliability of collected data

Answers accuracy

Redemption

Fast survey completion

Rate of dropout MEDIUM-HIGH HIGH LOW

Good for long questionnaire

Good for complex questionnaire