A study was performed examining stroke rates when comparing people at work with people on long term sickness leave


Question Number 0031
Question:
A study was performed examining stroke rates when comparing people at work with people on long term sickness leave. Working people were found to have a lower stroke rate. It was concluded that work reduces your risk for stroke. This study most clearly shows
a) recall bias
b) chronologic Bias
c) lead-time bias
d) publication bias
e) selection bias


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