demonstrated a 97%–98% accuracy of self-reported stone events, the incident kidney stones in our study were not adju- dicated.17,18 It is reassuring that our prior study9 identified similar significant dietary and demographic (e.g., age, race, BMI) risk factors and degree of risk compared with the other large epidemiologic studies (the Health Professionals Follow up Study and especially Nurses Health Study I and II).
Self-reported dietary energy intake is often unreliable, and, despite calibration, we may have corrected only some of the biases associated with reporting.48 Unfortunately, the only vari- able we were able to calibrate in our study was total dietary energy intake. Water and sodium intake are probably underestimated because the values are calculated on the basis of total beverage
demonstrated a 97%–98% accuracy of self-reported stone events, the incident kidney stones in our study were not adju- dicated.17,18 It is reassuring that our prior study9 identified similar significant dietary and demographic (e.g., age, race, BMI) risk factors and degree of risk compared with the other large epidemiologic studies (the Health Professionals Follow up Study and especially Nurses Health Study I and II).
Self-reported dietary energy intake is often unreliable, and, despite calibration, we may have corrected only some of the biases associated with reporting.48 Unfortunately, the only vari- able we were able to calibrate in our study was total dietary energy intake. Water and sodium intake are probably underestimated because the values are calculated on the basis of total beverage
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