1997
Comparison of dietary calcium with supplemental calcium and other nutrients as factors affecting the risk for kidney stones in women.
Curhan GC, Willett WC, Speizer FE, Spiegelman D, Stampfer MJ. Comparison of dietary calcium with supplemental calcium and other nutrients as factors affecting the risk for kidney stones in women. Annals Of Internal Medicine 1997, 126: 497-504. PMID: 9092314, DOI: 10.7326/0003-4819-126-7-199704010-00001.Peer-Reviewed Original ResearchConceptsHealth Study ISymptomatic kidney stonesDietary calciumSupplemental calciumRelative riskKidney stonesCalcium intakeHighest quintileLowest quintileRisk factorsSelf-administered food frequency questionnaireIncident symptomatic kidney stonesNurses' Health Study IStone formationAbsorption of oxalateFollowing relative risksDietary calcium intakeProspective cohort studyFood frequency questionnaireMain outcome measuresPotential risk factorsYears of ageCohort studyDecreased riskCalcium ingestion
1996
Prospective Study of Beverage Use and the Risk of Kidney Stones
Curhan G, Willett W, Rimm E, Spiegelman D, Stampfer M. Prospective Study of Beverage Use and the Risk of Kidney Stones. American Journal Of Epidemiology 1996, 143: 240-247. PMID: 8561157, DOI: 10.1093/oxfordjournals.aje.a008734.Peer-Reviewed Original ResearchConceptsFluid intakeKidney stonesStone formationProspective studySemiquantitative food frequency questionnaireBeverage useAdditional fluid intakeFood frequency questionnaireKidney stone riskSymptomatic kidney stonesTotal fluid intakeYears of ageThiazide useFrequency questionnaireStone recurrenceIncident casesType of beverageStone riskDietary intakeDecaffeinated coffeeDietary informationGrapefruit juiceIntakeSpecific beveragesBeverage type