Skip to main content
. 2016 Mar 5;26(3):131–136. doi: 10.2188/jea.JE20150049

Table 3. Hazard ratios for incidence of kidney stones by BMI, 1985 to 2004–05.

  BMI Participants Person-years
of follow-up		 Incidence Incidence
(per 10 000 person-years)		 Crude
hazard ratio
(95% CI)		 Age- and alcohol-
adjusted hazard ratio
(95% CI)		 Multivariablea
hazard ratio
(95% CI)
1st tertile 15.9–21.6 1354 25 726 70 27 1.00 (Reference) 1.00 (Reference) 1.00 (Reference)
2nd tertile 21.7–23.7 1361 25 859 88 34 1.26 (0.92–1.73) 1.29 (0.94–1.77) 1.28 (0.93–1.76)
3rd tertile 23.8–35.6 1359 25 821 100 39 1.44 (1.06–1.96) 1.49 (1.10–2.02) 1.41 (1.02–1.97)
P for trend           0.019 0.011 0.041

BMI, body mass index; CI, confidence interval.

aAdjusted for age, alcohol consumption, systolic blood pressure, cardiorespiratory fitness, and cigarette smoking.