Table 1.

Age and multivariate adjusted relative risks for incident kidney stones by menopausal status (1991–2013)

	Pre-menopause	Post-menopause	p-value
Cases	2,415	1,041
Person-years	1,304,561	557,873
Age-adjusted RR	1.0 (ref)	1.30 (1.17, 1.44)	<0.001
MV-adjusted RR	1.0 (ref)	1.27 (1.08 to 1.46)	0.003

Multivariate Model: Adjusted for age, body mass index, race, dietary factors (calcium, magnesium, potassium, sodium, animal protein, oxalate, vitamin D, vitamin C, alcohol, total fluid), supplemental calcium intake, thiazide, history of hypertension, history of diabetes mellitus, post-menopausal hormone therapy

^*Abbreviations: MV, multivariate; RR, relative risk