Various pedagogical activities to mobilise Watson's ten Carative Factors

No intervention during the different times of measurement. Educational intervention will be delivered after the last measure.

Four educational sessions:

• Acquisition of core concepts of caring practice (I)
• Acquisition of core concepts of caring practice (II)
• Search for meaning: Influencing hope in persons through humanistic practice
• Enacting different caring attitudes and behaviours in an intermediary simulation exercise with actor

NPR will be measured with the French version (EIIP-70) of the Caring Nurse-Patient Interaction Scale (CNPI-70). This tool comprises 70 items across 10 dimensions that capture each of Watson's 10 CF. It allows nurses to selfevaluate their frequency of caring attitudes/behaviours. More specifically, the EIIP-70 covers the following dimensions: humanism (6 items), hope (7 items), sensitivity (6 items), relationship (7 items), emotions (6 items), problem solving (6 items), teaching (11 items), assistance (10 items) and existential factors (6 items). Respondents must choose from five responses ranging from 1 (almost never) to 5 (almost always). This tool was validated on 377 nursing students and demonstrates good psychometric properties (Cronbach's alphas for the ten sub-dimensions range from .73 to .91).

Team cohesion will be measured with the Group Environment Questionnaire (GEQ), which was subsequently adapted for work teams. Like the original, the French version contains 18 items and encompasses the four dimensions of team cohesion, namely, respondent's social-related attraction to the group (5 items, 1 of which is reverse scored), respondent's task-related attraction to the group (4 items, 2 of which are reverse scored), social-related group integration as perceived by respondent (4 items, 2 of which are reverse scored), and task-related group integration as perceived by respondent (5 items, 1 of which is reverse scored). The response scale ranges from 1 (strongly disagree) to 5 (strongly agree). The questionnaire was tested on a sample of nurses from another healthcare institution. No major comprehension difficulties emerged. Cronbach's alphas for the different dimensions run from 0.71 to 0.81.

Quality of working life (QoWL) will be measured with a scale developed by Elizur and Shye (70), translated and validated in French. The scale is composed of 16 items exploring different dimensions of QoWL : psychological (items 1-4), physical (items 5-8), social (items 9-12) and cultural (items 13-16). Respondents must choose from six answers on a Likert scale ranging from "a very large part" to "very little".

Quality of life (QoL) of HD patients will be explored with a French version of the WHOQOL-BREF. This scale is a generic instrument that serves to explore perceived QoL and the impact of health problems on QoL. It comprises 26 items exploring four dimensions: physical health (7 items), psychological health (6 items), social relationships (3 items), and environment (8 items). It also contains two items measuring overall QoL, which is an added advantage of this instrument. Respondents must choose from five responses on a Likert scale ranging from 0 (not at all) to 5 (completely). The WHOQOLBREF yields an overall "QoL profile" score on a scale of 0 to 100, as well as scores for each dimension. A high score indicates a high perceived QoL. The French version translated and validated, and has shown perfectly satisfactory psychometric properties, and good acceptability by the population with a non-response rate below 5%.