Participants completed structured interviews using computer assisted survey interviewing technology.
Respondent driven sampling and audio-computer assisted survey interviewing (ACASI) methods were employed.
The interviewers simultaneously collected and entered data into a password-protected, computer database using CASES (Computer Assisted Survey Execution System).
Thirteen college student interviewers and two supervisors conducted the interviews using a telephone interviewing software package, Computer Assisted Survey Execution System.
Assessments of seropositioning and serosorting relied on participant report, which could have been subject to desirability bias despite attempts to minimize this by utilizing computer assisted self-survey.
The pre-publication history for this paper can be accessed here: http://www.biomedcentral.com/1471-2458/11/584/prepub We thank the women who participated in the computer assisted telephone survey.
At baseline all participants had their weight, height and blood pressure measured, received the National Heart Lung and Blood Institute's Aim for a Healthy Weight brochure, and completed an audio computer assisted self-interview survey which collected data on demographics, health behaviors, mental health and neighborhood characteristics.
Using computer assisted personal interviews, we survey 493 individuals at their homes using a Discrete Choice Experiment (DCE) questionnaire administered between February and July 2011 in Northern Ireland.
The study began in 2009 and involved web-based, postal, or computer assisted telephone interviews to survey a stratified random sample of 60,000 veterans with documented military service between October 2001 and June 2008.
We undertook a computer assisted telephone interviewing (CATI) survey of the Australian public and a parallel survey of those involved in nanotechnology from the academic, business and government sectors.
Each participating country can choose from these modules and decide on the most practical and cost-effective survey method (i.e., household face-to-face survey, computer assisted telephone interview, or computer assisted personal interview) [ 41].
