Update to the design and methods of the PATH Study, Wave 4 (2016-2017).

Opsomer, Jean D; Dohrmann, Sylvia; DiGaetano, Ralph; Piesse, Andrea; Taylor, Ethel; Creamer, MeLisa R; Han, Daifeng; Everard, Colm; Borek, Nicolette; Hubbard, Frost; Zandberg, Izabella; Kanel, Moana; Taylor, Kristie; Kimmel, Heather L; Paredes, Antonio; Siegfried, Yumiko; Cheng, Yu-Ching; Kwan, Jonathan; Carusi, Charles; Hyland, Andrew.

Affiliation

Opsomer JD; Westat Inc, Rockville, Maryland, USA jeanopsomer@westat.com.
Dohrmann S; Westat Inc, Rockville, Maryland, USA.
DiGaetano R; Westat Inc, Rockville, Maryland, USA.
Piesse A; Westat Inc, Rockville, Maryland, USA.
Taylor E; Center for Tobacco Products, Silver Spring, Maryland, USA.
Creamer MR; National Institute on Drug Abuse, Gaithersburg, Maryland, USA.
Han D; Westat Inc, Rockville, Maryland, USA.
Everard C; National Institute on Drug Abuse, Gaithersburg, Maryland, USA.
Borek N; Center for Tobacco Products, Silver Spring, Maryland, USA.
Hubbard F; Westat Inc, Rockville, Maryland, USA.
Zandberg I; Center for Tobacco Products, Silver Spring, Maryland, USA.
Kanel M; National Institute on Drug Abuse, Gaithersburg, Maryland, USA.
Taylor K; Westat Inc, Rockville, Maryland, USA.
Kimmel HL; DESPR, National Institute on Drug Abuse, Bethesda, Maryland, USA.
Paredes A; Center for Tobacco Products, Silver Spring, Maryland, USA.
Siegfried Y; Westat Inc, Rockville, Maryland, USA.
Cheng YC; Center for Tobacco Products, Silver Spring, Maryland, USA.
Kwan J; Center for Tobacco Products, Silver Spring, Maryland, USA.
Carusi C; Westat Inc, Rockville, Maryland, USA.
Hyland A; Health Behavior, Roswell Park Cancer Institute, Buffalo, New York, USA.