Table 2

Demographics of survey population
Variable n (%)
Total returned surveys 186/807 (23.0)
Undeliverable surveys 46/853 (5.4)
Professional time spent on research-related activities
0%–25% 34 (18.3)
26%–50% 28 (15.1)
51%–75% 48 (25.8)
76%–100% 38 (20.4)
No response 38 (20.4)
Involvement in RCTs – median number of trials (IQR)
As a principal investigator 3 (1–5)
As a member of the study team 5 (2–10)
Discipline trained in*
Medicine 83 (44.6)
Research 69 (37.1)
Psychology 17 (9.1)
Allied healthcare 13 (7.0)
Nursing 11 (5.9)
Other 9 (4.8)
No response 38 (20.4)
Pediatric subspecialty
Public health 16 (8.6)
Developmental, psychosocial, and learning problems 14 (7.5)
Mental health or psychiatry 13 (7.0)
Neonatology 11 (5.9)
Endocrinology and nutrition 10 (5.4)
Emergency medicine or critical care 9 (4.8)
Infectious diseases 9 (4.8)
Hematology or oncology 7 (3.8)
Oral health 6 (3.2)
Allergy and immunology 5 (2.7)
Anesthesia 5 (2.7)
General pediatrics or family medicine 5 (2.7)
Other 47 (25.2)
No response 29 (15.6)
Geographic region of corresponding author
Asia 10 (5.4)
Australia and New Zealand 12 (6.5)
Canada 47 (25.2)
Europe 25 (13.4)
South America 3 (1.6)
USA 46 (24.7)
No response 43 (23.1)
Setting of employment*
University or academic centre 124 (66.7)
Hospital 48 (25.8)
Solo practice 4 (2.2)
Group practice 4 (2.2)
Industry 4 (2.2)
Other 7 (3.8)
No response 39 (21.0)

*More than one selection possible.

Further details on collapsed categories are available from the authors.

Hamm et al.

Hamm et al. BMC Medical Research Methodology 2012 12:158   doi:10.1186/1471-2288-12-158

Open Data