The purpose of the questionnaire component was to explore drug use, sexual behavior, health history, and perceptions.
Interviews included a structured questionnaire component.
Participants lacking all data in an inventory or a questionnaire component variable were excluded from analysis of that variable.
Reasons for non-participation in the questionnaire component included refusal, death, extreme illness following surgery and failure to return for follow-up care.
The results from the two round Delphi questionnaire component of this quality and safety review were used to inform the FMEA meeting.
For the 2012 Global Survey on Alcohol and Health an additional questionnaire component on unrecorded alcohol consumption has been developed and implemented based on the principles of the Delphi survey methodology (for a description, see Linstone and Turoff 1975; Rehm and Gadenne 1990).
In the quantitative studies (including four mixed methods studies with a questionnaire component), the surveys used were usually not provided [ 11, 16, 17, 21, 25, 27, 44, 53, 55, 61], and inadequate information was often presented on survey source and development, structure and length of the survey, types of respondents and/or psychometric properties [ 11, 21, 23, 25, 27, 53].
The next part of the questionnaire contained components of WHO Secretariat Committee on Research Involving Human Subjects (SCRIHS) checklist on information leaflets (see Additional file 1, Appendix 2).
Table 1 presents the mean differences and significance level between LS and SS groups for each questionnaire (HAD components anxiety 1 and depression 2, SF-36 components physical 3 and mental 4, TSC-33).
