The Effect of Program Design on Engagement With an Internet-Based Smoking Intervention: Randomized Factorial Trial
The Effect of Program Design on Engagement With an Internet-Based Smoking Intervention: Randomized Factorial Trial
Jennifer B McClure
1
, PhD
;
Susan M Shortreed
1
, PhD
;
Andy Bogart
1
, MS
;
Holly Derry
2
, MPH
;
Karin Riggs
1
, MSW
;
Jackie St John
1
, BS
;
Vijay Nair
3
, PhD
;
Larry An
2
, MD
1
Group Health Research Institute
,
Seattle
,
WA
,
US
2
University of Michigan
,
Center for Health Communications Research
,
Ann Arbor
,
MI
,
US
3
University of Michigan
,
Department of Statistics
,
Ann Arbor
,
MI
,
US