Q1. Using the table provided, please identify the study designs (i-v) according to: a. Whether they are a/an: (2 marks each) Cross-Sectional Study - Analytical Cross-Sectional Study - Descriptive Ecological Study - Analytical Case-Control Study Retrospective Cohort Study Prospective Cohort Study Randomised Controlled Trial Cluster Randomised Controlled Trial b. Explain why it is an analytical or descriptive study and why it is the identified study design. Please use less than 20 words (2 marks each). c. Name the measure of frequency (point prevalence, period prevalence, cumulative incidence, incidence rate) or the measure of association (prevalence (rate) ratio, risk ratio, odds ratio of exposure, rate ratio) that would be appropriate to use for the study design (note - some studies may have more than one possible measure - please list only one - also, do not use 'relative risk') (1 mark each). a. Study type (2 marks) Answer here: Ecological study- Analytical Cross-Sectional Study - Descriptive Case-Control Study Cluster Randomised Controlled Trial Retrospective Cohort Study b. Justification in less than 20 words {2 marks) Analyzes the association between exposure and outcome at a population level. Describes the relationship between screen time and sleep quality at a specific point in time. Compares exposure history between cases and controls. Randomly assigns groups (clusters) to different interventions. Examining the impact of noise exposure on hearing among factory workers. c. Relevant measure of frequency OR association (1 mark) Prevalence (rate) ratio Point prevalence Odds ratio of exXposurs Risk ratio Incidence rate