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. Author manuscript; available in PMC: 2015 Sep 1.
Published in final edited form as: Kidney Int. 2014 Sep 17;87(3):623–631. doi: 10.1038/ki.2014.298

Table 4.

Risk of ESKD among PH patients with and without NC.

Group of PH patients Hazard ratio (95% CI)
Total NC Prevalent NC Incident NCb
All PH types (N=235, 57 ESKD)
  No adjustment 2.1 (1.2–3.6) 1.5(0.8–2.8) 5.1(2.4–11.0)
  Adjusting PH1, patients by family screening and age on 1st image 1.7 (1.0–3.0) 1.2 (0.6–2.3) 4.0 (1.9–8.5)
  Adjusting PH1 and stone numbers on 1st imagea 3.9 (1.7–8.9) 1.6 (0.4–5.7) 8.2 (3.2–21.3)
PH1 subgroup (N=170, 56 ESKD)
  No adjustment 1.5 (0.9–2.5) 1.1 (0.6–2.0) 3.6(1.7–7.7)
  Adjusting patients by family screening and age on 1st image 1.6 (0.9–2.9) 1.2 (0.6–2.3) 3.6 (1.6–7.8)
  Adjusting stone numbers on 1st imagea 3.5 (1.5–8.3) 1.6 (0.4–5.7) 6.9 (2.6–19.0)

Patients who had ESKD before first image were excluded in the analysis.

a

Stone number is available for 140 PH patients with 25 ESKD events overall, and for 94 PH1 patients with 24 ESKD events.

b

patients with prevalent NC are those who found NC on first image. Patients with incident NC are those who had new NC during follow-up.