Report and Validation of a Novel Telephone-Sampling Technique

This is a report on validity testing of a novel telephone-sampling technique created as a less expensive and less time-consuming survey method. The technique also enables the sampling of both listed and unlisted telephone numbers. Validity coefficients were computed for door-to-door and telephone interview samples of the same population. Chi-square analyses showed that items of the two techniques were similar, suggesting that the telephone-sampling method is valid.