The study includes two levels—a telephone interview and an in-person visit with blood, urine, and saliva collection. At this time, we are only able to conduct in-person visits with participants who reside in California, Washington, and Oregon and about 1 in 4 of participants who are located in other states. You will be notified in the invitation letter we mailed to you if you have been identified as eligible for the telephone interview only or both the telephone interview and the in-person visit.

The telephone interview includes:

  • A phone interview with the Survey Research Group. The phone call and interview will take about 45-60 minutes of your time, and will be scheduled at a time that is convenient for you. When we call you, our number will appear as Dept. Health from a 916 area code on your caller ID.

In recognition of the time you will be contributing to this research effort, you will receive $25.00 for completion of the phone interview.

If you are eligible, the in-person visit includes: An in-person visit with a female member of the 3Gs team. The examiner will be a certified phlebotomist (a person who is certified to draw blood) or licensed practical nurse. The visit can take place at your home or place of work (or other location that you choose) and it will take about 30 minutes of your time. During her visit, she will:

  1. Measure your blood pressure.
  2. Measure your height, weight, and waist circumference.
  3. Collect a blood, urine, and saliva sample.

If you have a daughter(s) nine years old or older, we will ask you to discuss with her about whether she would like to participate in the in-person visit with you by providing the same samples and measurements. Daughters over 18 will also be invited to participate in the in-person visit by providing the same samples and measurements, as well as a completing a health questionnaire. If she is interested in participating or if she'd like to learn more about it, study documents can be found here. If she is under the age of 18 we will ask her to provide her assent (her agreement) for participation in the study and we will need your consent for her to participate in the study. If she is age 18 or older you will not need to consent for her to be in the study, the choice will be up to her. Your daughter(s) can also choose to participate in all or just some of the in-person visit activities.

If you participate in the in-person visit, you will receive $50.00 for completion of the home visit, for a total of $75.00. If your daughter(s) participates in the in-person visit, each will also receive $50 for their participation. If your daughter also completes the questionnaire, she will receive an additional $25.

Please contact us with any questions, comments, or changes to your contact information.

The Three Generations Study and the Child Health and Development Studies do not offer any diagnosis or treatment for illnesses. If your blood samples are tested as part of this study, you will have the option of choosing to have the results of these tests sent to you. These results are not designed for medical use and the information you receive may not suggest any actions you can take to reduce your health risk. At this time, only blood is being tested as part of the 3Gs study. Other specimens collected as part of the study will be stored for future use. Study data is stored only with your assigned study ID number. Overall results from the study will be available through study newsletters, articles on the Child Health and Development Studies website, and reports in scientific publications.