1. Centers for Disease Control and Prevention [US] (1999) Framework for program evaluation in public health. MMWR 48(RR11):1–40
2. Centers for Disease Prevention and Control. Focus the evaluation design [Internet]. [cited 2023 Sept 23]. https://www.cdc.gov/evaluation/guide/step3/index.htm
3. Kernler D Section 1.2: observational studies versus designed experiments [Internet]. [cited 2023 Sept 24]. https://faculty.elgin.edu/dkernler/statistics/ch01/1-2.html
4. Nurse-family partnership. [Internet]. [cited 2023 Sept 24]. https://www.nursefamilypartnership.org
5. Monsen KA, Chatterjee SB, Timm JE, Poulsen JK, McNaughton DB (2015) Factors explaining variability in health literacy outcomes of public health nursing clients. Public Health Nurs 32(2):94–100