Table 4.

Final multivariable Cox regression model: correlates of incident fracture, including measures of physical activity

Model n=290 (483 observations)HR95% CIP Value
Age ≥15 versus <15 years0.39(0.10, 1.49)0.17
Male0.40(0.12, 1.36)0.14
Age X male interaction3.89(0.72, 21.04)0.12
Tanner stages 4–5 versus 1–31.42(0.58, 3.52)0.45
Height Z-score1.17(0.89, 1.55)0.25
Baseline eGFR<60 ml/min per 1.73 m22.46(0.71, 8.50)0.15
Baseline walking difficulty1.07(0.15, 7.69)0.95
On phosphate binder0.12(0.01, 0.91)0.04
Average lnPTHa1.19(0.68, 2.06)0.54
>1 sports team in past 12 months4.87(2.21, 10.75)<0.001
  • a PTH natural log transformed.