Physical activity levels for each participant were made available from a questionnaire conducted between 2005 and 2008 that has previously been used to assess exercise levels in healthy adults [ 13].
Following a design used in a study about psychoeducation in schizophrenia in inpatient treatment in Germany [ 30], a two-step postal cross-sectional study using a two-part questionnaire was conducted between July and November 2012.
To verify our analysis framework and results, a questionnaire survey was conducted between February to July 2017.
The baseline survey was conducted between January to March 2009 and the end line survey was conducted between March to June 2012 using a structured questionnaire.
The study was a questionnaire based cross-sectional study that was conducted between July and November 2013.
In the first group, comprised of eight hospitals, the study was conducted between July and September 2005, 77 questionnaires were sent by mail to the project leaders.
The study was conducted between February and June 2007, and 1600 questionnaires overall were distributed proportionally to facility size (number of beds) and staff synthesis.
Data were collected by means of questionnaire designed to solicit information on shark divers' knowledge, socio-economic status, expenditures and expectations, conducted between July and August 2014 on Pico and Faial Islands, to 144 divers.
Stage 2 of the study was conducted between 2004 and 2006, and comprised a Computer Assisted Telephone Interview (CATI), a self-completed questionnaire and a clinical assessment.
The draft questionnaires and the protocols for sampling and data collection were tested in a pilot study conducted between July and November 2006 in the Netherlands.
The questionnaires were conducted in between 14 August and 14 November 2012, and the responses came from ICOMOS members from USA, UK, Australia, Iran, India and Malaysia.
