Researchers have been interested in the risk of knee osteoarthritis in former professional sportspeople. The following q

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Researchers have been interested in the risk of knee
osteoarthritis in former professional sportspeople. The following
questions relate to a series of studies undertaken on a study
sample of 1000 retired male and female professional sportspeople
aged 45–55 years in Australia in 2015.
An initial study was undertaken to establish the extent of knee
osteoarthritis present in the study sample. The study identified
104 sportspeople with knee osteoarthritis based on X-ray
examination. Please calculate the point prevalence and interpret
your result. (5 marks)
Based on the findings of the above study researchers decided to
run a follow-up study for 5 years. In 2020, all 1,000 sportspeople
were assessed at a second health check and a further 93 had
developed knee osteoarthrosis. What was the cumulative incidence of
knee osteoarthrosis among this study sample after 5 years of
follow-up? Please interpret your result. (5 marks)
What was the point prevalence of knee osteoarthritis at the
second assessment? Please interpret your result. (5 marks)