Which type of study is appropriate to investigate patients' perceptions about quality of life after a diagnosis of liver cancer?

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Qualitative research offers analysis of interviews,observations,and/or surveys to measure people's perceptions,feelings,or views of phenomena about which little is known.Randomized trial has participants divided into groups to test for the same outcome to determine if there is a difference in the effect of a treatment or intervention compared with a standard of care.A case control study compares patients who have a disease or outcome of interest with patients who do not have the disease or outcome.The researcher looks back to compare how frequently the exposure to a risk factor is present in each group to determine the relationship between the risk factor and disease.If quantitative data such as physical measurements and scores on surveys are collected,statistical results from the study are explained.Quantitative data do not focus on perceptions and feelings.

Which Type of Study Is Appropriate to Investigate Patients' Perceptions