Table 3.

Medians (IQR) for serologic iron indices at 2 separate time points in a subset of incident colorectal adenoma cases (n = 50) and controls (n = 30) in the PLCO Cancer Screening Trial

 Pilot cases (n = 50)Pilot controls (n = 30)
T0, median (IQR)T5, median (IQR)PaT0, median (IQR)T5, median (IQR)Pa
Ferritin129 (76–175)106 (68–158)0.15129 (67–243)104 (61–217)0.18
Iron114 (100–144)116 (91–131)0.19109 (90–136)109 (73–129)0.67
Transferrin saturation34 (28–40)33 (27–40)0.7232 (28–37)31 (23–37)0.82
TIBC360 (319–393)335 (304–383)0.08357 (324–397)345 (303–368)0.10
UIBC235 (189–167)233 (194–257)0.71242 (200–270)232 (203–290)0.47
  • aThe Wilcoxon sign-rank test for difference between medians.