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Table 1 Demographic Features and Laboratory Findings of THOP Patients and Controls

From: The factors associated with transient hypothyroxinemia of prematurity

  THOP group Control group P value
Participants, n 71 73  
Male gender 41 (58) 34 (47) 0.180
GA (wk) 29.7 ± 2.48 (24–34) 30.5 ± 2.30 (26–34) 0.606
Measurement day 11.9 ± 2.22 (10–20) 12.3 ± 2.92 (10–20) 0.948
Measurement GAA (wk) 31.4 ± 2.42 (26–36) 32.2 ± 2.18 (28–36) 0.064
FT4 (ng/dl) 1.00 ± 0.24 (0.31–1.58) 1.55 ± 0.28 (0.97–2.54) < 0.001
TSH (mU/L) 4.76 ± 3.36 (0.25–10.64) 4.32 ± 2.60 (0.73–13.3) 0.556
  1. Data are given as numbers and (%), after decimal rounded to the greater side. Other data are given as mean ± standard deviation (min-max). When the THOP group and control group cases were compared, FT4 was lower as expected (p < 0.05, dark stained)
  2. Abbreviations: THOP transient hypothyroxinemia of prematüre; GA gestational age; GAA gestation-adjusted age