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Table 3 TT3 and FT3 hormones at different sampling times and in different exposure groups

From: Thyroid function in Danish greenhouse workers

  TT3 (nmol/l) FT3 (pmol/l)
  Spring n = 121 Fall n = 78 Spring n = 120 Fall n = 86
Exposure groups Mean (95%CI) Mean (95%CI) Mean (95%CI) Mean (95%CI)
Low spraying load < 7.2 2.01 (1.93;2.10) 2.16 (2.01;2.31) 5.81 (5.57;6.05) 6.77 (6.2;7.35)a
High spraying load ≥ 7.2 2.08 (2.00;2.17) 2.18 (2.05;2.30) 6.07 (5.83;6.31) 6.28 (5.76;6.80)
Spraying hours pr year < 40 2.03 (1.95;2.10) 2.14 (2.01;2.28) 5.96 (5.73;6.19) 6.47 (5.93;7.01)
Spraying hours pr year ≥ 40 2.04 (1.97;2.12) 2.19 (2.05;2.32) 5.93 (5.71;6.15) 6.53 (5.99;7.07)
Uses gloves always 2.02 (1.88;2.15) 2.21 (1.96;2.45) 6.02 (5.63;6.41) 6.76 (5.81;7.72)
Uses gloves sometimes 2.06 (1.97;2.14) 2.23 (2.07;2.38) 5.90 (5.65;6.15) 6.52 (5.85;7.18)
Uses gloves never 2.04 (1.96;2.12) 2.10 (1.97;2.24) 5.95 (5.70;6.19) 6.40 (5.85;6.95)
Exposure up to 8 years 2.02(1.94;2.10) 2.18 (2.02;2.33) 6.05 (5.82;6.29) 6.39 (5.77;7.00)
Exposure more than 8 years 2.05 (1.97;2.12) 2.16 (2.04;2.28) 5.85 (5.63;6.06) 6.57 (6.08;7.06)a
Job task low exposure 1.97 (1.88;2.06) 2.20 (2.06;2.35)a 5.79 (5.52;6.05) 6.41 (5.81;7.01)a
Job task medium exposure 2.06 (1.98;2.13) 2.14 (2.00;2.27) 6.09 (5.87;6.31) 6.44 (5.88;7.00)
Job task high exposure 2.16 (1.99;2.32) 2.14 (1.82;2.46) 5.78 (5.30;6.26) 6.99 (5.92;8.06)
All 2.04 (1.98;2.09) 2.17 (2.07;2.26)a 5.94 (5.78;6.10) 6.50 (6.12;6.87)a
  1. a) Difference in the fall sample from the spring sample in a longitudinal analysis (p < 0.05).