What research methods do the nurses use to perform these assessment? How would you go about gathering the data for those assessment ?

An assessment of baseline knowledge, attitudes, and practices among healthcare providers in the community regarding pneumococcal vacination to identify barrierd to providing pneumoccal vacination

An  assessment of baseline  knowledge, attitudes, and  beleifs among community residents aged 65 years or older to determine barriers to receiving pneumococcal vaccination.

What research methods do the nurses use to perform these assessment? How would you go about gathering the data for those assessment ?