Effects of enhanced calling efforts on response rates, estimates of health behavior, and costs in a telephone health survey using random-digit dialing.

摘要: Public health researchers frequently rely on random-digit dialing (RDD) telephone surveys in monitoring trends behavior and evaluating promotion interventions. RDD response rates have declined during the past decade, cost-effective methods to increase are needed. The authors evaluated two levels of enhanced calling efforts an survey cancer-related State Washington. first level effort was 1 month after 11 original attempts a household, when attempted up recalls. second 6 months answered call, recalled those persons who could not be interviewed. Enhanced increased overall rate by percent. Nine percentage points were attributable call backs. There demographic differences among participants reached at different effort, but no consistent associations with related alcohol use, smoking, diet, or screening. Marginal costs for interviews completed about 50 percent higher than calls. concluded that may justified, because they confidence generalizability results. However, found very little change results including from difficult reach interview.