What level of significance was used-What does this level of significance mean?

Research article: Bangurah, S. S., Vardaman, S. A., & Cleveland, K. K. (2017). Hypertension in the FAITH community: A four-week, nurse led, diet/exercise intervention. Journal of Christian Nursing, 34(4), 225–231. doi:10.1097/CNJ. Hypertension in the Faith Community: A Four-Week, Nurse Led,… : Journal of Christian Nursing (lww.com) 1. What were the research questions of this study? […]