Methods
Design
A descriptive, cross-sectional survey design was used.
Ethical considerations
Research permission was requested and allowed from all poly- technics. Nursing teachers were informed of the study by e-mail and confidentiality was assured. Participants gave informed consent by returning the questionnaires. They participated voluntarily and their anonymity was protected so that the researchers only knew who took part in the study. The report does not give any opportunity to recognise any individual participants.