Ketogenic diets, which are usually very low in carbohydrates and high in fats and/or proteins, have gained considerable popularity in the last few decades. Results regarding the impact of such diets on cardiovascular risk factors are controversial, both in animals and humans, but some improvements in obesity and Type 2 diabetes have been observed.

A study seeks to explore the effect of ketogenic diets on a symptom experienced by patients with Type 2 diabetes called glycemic variability. Glycemic variability refers to fast, uncontrolled fluctuations in blood glucose levels that can cause dizziness, nausea, fatigue, and irregular heartbeat.

As part of the study, patients diagnosed with Type 2 diabetes were randomly assigned to two groups. Group 1 received a ketogenic diet and Group 2 received a high carbohydrate diet for a period of 2 months. Both groups of patients had supervised aerobic and resistance exercise activities for an hour three days a week. The researcher who evaluated the patients over the study period (to assess whether there was a decrease in the patients' glycemic variability) did not know which patients' were receiving the ketogenic diet.

The table below summarizes some of the study results. Use these results to answer the questions that follow.

What proportion of participants, regardless of the diet to which they were assigned, experienced a decrease in glycemic variability?

Among participants maintaining the ketogenic diet, what proportion experienced a decrease in glycemic variability?

Among participants maintaining the carb rich diet, what proportion experienced a decrease in glycemic variability?

Is there evidence that maintaining a ketogenic diet is associated with decreased glycemic variability? Answer yes or no and justify your opinion by citing appropriate numerical support.