The PATH Reliability and Validity Study
How can we determine whether the data collected in a large study of tobacco use are accurate and reliable? The PATH Reliability and Validity Study tries to do exactly that—to assess the quality of the data in the PATH Study.
- More than 500 respondents took the PATH Study interview twice, about 2 weeks apart.
- Most provided saliva samples that allowed us to tell whether they had used tobacco recently.
- With these data, we could find out whether answers to the PATH Study questions are reliable and truthful.
- The study showed that survey data, even on sensitive topics like smoking, are of very high quality.
- People almost always gave the same answers over the 2 interviews.
- Their answers to questions about recent tobacco use almost always agreed with the saliva test results.