Demographic data

Two separate assignments. I would like for the same writer to completed both. Two references each please. Assignment 1. Demographic data are collected for every study. What is the purpose of describing the demographic data? Textbook information: References Polit, D. F., & Beck, C. T. (2017). Nursing research: Generating and assessing evidence for nursing practice (10th ed.). Philadelphia, PA: Lippincott Williams & Wilkins. Assignment 2 . There is a tendency for novice researchers to develop their own instrument if they cannot readily find one. How might you respond to a peer or manager who asks you to help develop a new tool to collect patient data on anxiety prior to cardiac catheterization?