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Question 1 of 10: [Shared context] A study investigated the increased risk of death related to a high-salt diet, adjusting hazard ratios for factors including age and smoking. (d)(ii) Suggest why studies of this type are unreliable.
Evaluating health-risk studies
Exam question
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A study investigated the increased risk of death related to a high-salt diet, adjusting hazard ratios for factors including age and smoking.
Suggest why studies of this type are unreliable.
(2)Total for this question: 2 marks
