A control study of dietary factors in renal stone formation.

Fifty-one first admission renal stone patients and an equal number of controls were interviewed and a dietary history of the average weekly intake was collected from each participant. A comparison of the dietary intake per kilogram body weight in each group was made using standard statistical procedures. None of the nutrient intakes showed a significant difference, but dietary fibre intake and the percentage of energy provided by carbohydrate were consistently higher in the control group, whereas the percentage of energy provided by fat was consistently higher in the renal stone group.