Instruments included a semi-structured interview, standardized questionnaires and file information on pregnancy, sexuality related characteristics (sexual risk behavior, multiple sex partners, sexual trauma, lack of assertiveness in sexual issues and early maturity) and mental health characteristics (conduct disorder, alcohol and drug use disorder and suicidality).
Information about state PDMPs was obtained from the US Drug Enforcement Administration (United States Department of Justice US DOJ 2008) and the review of PDMP characteristics conducted by the Kentucky All Schedule Prescription Electronic Reporting Program Evaluation Team (Blumenschein et al. 2010).
A first attempt at "a university ranking with Russian characteristics" conducted in 2008 included number of alumni, number of students, and number of specialties among the five criteria for ranking institutions.
Socio-demographic data were obtained from a baseline survey of household characteristics conducted in 2000, as part of a larger epidemiologic study of schistosomiasis transmission in these villages.
An external agency blinded to participant characteristics conducted the randomization directly after the baseline measurement.
At baseline, study interviewers collected information on demographic and lifestyle characteristics, conducted clinical examinations, and obtained biospecimens (blood and urine).
This is consistent with the limited prior work examining potential differences in trial characteristics conducted in high- and non-high-income countries [ 2426]6].
A trained interviewer, independent of the forum presentations and who remained blinded to the participants' demographic, socioeconomic, and pain history characteristics conducted the telephone interviews.
All patients granted informed consent before participating in a comprehensive baseline evaluation of their clinical and psychosocial characteristics conducted by a physician and trained research assistants.
A single investigator (SN; human movement scientist with 1 year of experience in musculoskeletal examination), blind to participants' characteristics, conducted all ROM movements.
To our knowledge, this is the first study of these characteristics conducted in Spain, so it is not possible for us to put our results in perspective within our setting.
