Surveys were sent to lifeguards asking them about their own habits and those of the other pool employees.
Annual surveys were sent to 1% of the population (∼2500 individuals) during the period 2002 2004.
First, surveys were sent to all current members of the SCALE-UP wiki database (http://scaleup.ncsu.edu/).
The qualitative surveys were sent by email as an attachment to the coordinators who distributed them to all middle leaders.
Seven hundred and twenty surveys were sent in each mailing and a total of 249 surveys were returned (34.6%).
Setting: In February 2000, surveys were sent to 1176 individuals who had used rehabilitative services at a major midwestern university between 1950 and 1999.
Surveys were sent to the graduate programs in speech-language pathology accredited by the American Speech-Language-Hearing Associntion (ASHA) in 1994, and again in 1999.
The proportion of each institutional type, Tribal, Associates, Bachelors, Masters, and Research Universities, to which surveys were sent, reflected their national representation.
A total of 1,189 surveys were sent on March 6, 2004, and the survey took place on March 25 , 2004
Study design: In May and June of 1997, surveys were sent to all obstetricians and gynecologists on the mailing list of the Society of Obstetricians and Gynaecologists of Canada.
Two surveys were sent directly to treatment manufacturers (one survey to concrete and one survey to steel coatings producers) and one was sent to state department of transportation (DOTs) representatives and other organizations or agencies.
