Factors associated with recruitment, surveillance participation, and retention in an observational study of pregnant women and influenza.

ABSTRACT:

Background

This report describes the results of recruitment efforts and the subsequent participation of pregnant women in study activities in a 2010-2012 observational study focused on influenza illness and vaccination in California and Oregon, USA.

Methods

Socio-demographic and health characteristics extracted from electronic medical records were compared among pregnant women who enrolled in the study, refused to participate, or were never reached for study invitation. These characteristics plus additional self-reported information were compared between women who enrolled in two study tracks: a prospective cohort vs. women enrolled following an acute respiratory illness (ARI) medical encounter. The characteristics of women who participated in weekly ARI surveillance (cohort

SUBMITTER: Thompson MG 

PROVIDER: S-EPMC6507168 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature