Table 3

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


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

a) Difference in the fall sample from the spring sample in a longitudinal analysis (p < 0.05).

Toft et al. Environmental Health: A Global Access Science Source 2006 5:32   doi:10.1186/1476-069X-5-32