Table 1.

Overview of National Children’s Vanguard Study (NCS) recruitment groups and outreach and engagement approaches

Recruitment group	Number of study locations	Recruitment methods	Outreach and engagement approaches
Initial Vanguard Study (IVS)(January 2009–February 2012)	7	Household-based enumeration and recruitment	Community Advisory Boards Advance letters Healthcare provider (secondary) Community events Community organizations Media outreach (local)
Alternate Recruitment Substudy
Direct Outreach (DO)(November 2010–February 2012)	10	Self-referral after widespread community outreach and engagement	Pre-study outreach and engagement plans Community Advisory Boards Advance letters with follow-up mailings Healthcare provider (secondary) Community events Community organizations Media outreach (national and local)—included television, radio, online and social media
Enhanced Household-Based Recruitment (EHBR) (November 2010–February 2012)	10	Enhanced household-based enumeration and recruitment Enhancements: (1) Improved staff training for enumeration and screening (2) Enhanced outreach and engagement	Pre-study outreach and engagement plans Community Advisory Boards Advance letters with follow-up mailings Healthcare provider (secondary) Community events Community organizations Media outreach (national and local)—included television, radio, online and social media
Provider-Based Recruitment (PBR) (November 2010–February 2012)	10	Recruitment via healthcare providers’ offices	Pre-study outreach and engagement plans Community Advisory Boards Advance letters with follow-up mailings Healthcare provider (primary) Community events Community organizations Media outreach (national and local)—included television, radio, online and social media