I use training assessment tools with qualitative research. I use, in particular, narrative interviews and focus groups. In training, I use interview and focus group before and after the training, with qualitative analysis and evidence of meaning-shift. The results are very interesting, but I would not know if this method can be applied to your problem. However, I am available for any other information,
I think the major problem is not how to measure the effectiveness but the measuring depends on the goals and objectives you put for the nursing service and the given targeted region / population(s). The measures should anyway include quantitative and qualitative approaches. Nursing is going further than accounting for interventions / hospitalizations, ..., human and humanistic work escapes easily from numeric scaling.
As you may see, my view on the question is quite large. And as long as I do not know the Vision, Mission, Objectives of a service it is, in my modest opinion not measurable in it’s effectiveness.
In this article, they talk about a questionnaire and a conceptual framework that deals with this topic: An empirical test of the Nursing Role Effectiveness Model
The major role of community Health nurse is capacity building and raising awareness of the community to identify their potentials and mobilizing their resources so that they can deal
use a checklist that is specific to the nursing interventions and the expected outcome... Are you checking on impact following an intervention, like health education?
It will be useful to narrow down your definition of 'nursing work'. If you mean the work environment, I suggest using the Copenhagen Psychosocial Questionnaire. It is open-sourced and it provide comprehensive measures of more than 40 work-related variables such as work demand, work pace, role clarity, work influence, commitment, leadership...and so on...and its effects on stress, burnout, health, negative work behaviour...