Table 4.

Adjusted estimates of group–level incidence rates of nephrolithiasis in South Carolina by age and sex from 1997 to 2012: Model 3

Model 3: Age Group (yr)5-yr Change in Kidney Stone Incidence among Females (95% Confidence Interval)5-yr Change in Kidney Stone Incidence among Males (95% Confidence Interval)
<101.10 (0.94 to 1.29)1.08 (0.93 to 1.25)
10–141.27 (1.15 to 1.40)1.13 (1.03 to 1.24)
15–191.28 (1.22 to 1.33)1.23 (1.18 to 1.29)
20–241.19 (1.15 to 1.23)1.09 (1.06 to 1.13)
25–341.17 (1.15 to 1.19)1.00 (0.98 to 1.02)
35–441.19 (1.17 to 1.22)1.02 (1.00 to 1.03)
45–641.10 (1.08 to 1.11)0.92 (0.91 to 0.93)
≥651.16 (1.13 to 1.19)1.03 (1.02 to 1.05)
  • Model 3 included an interaction term between age, sex, and year. All models with interactions additionally included each main effect, lower–order interaction terms, and a random intercept for county of residence. Models examining for age and sex effects were adjusted for race.