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TT4 and FT4 hormones at different sampling times and in different exposure groups |
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| TT4 (nmol/l) |
FT4 (pmol/l) |
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| Spring n = 121 |
Fall n = 78 |
Spring n = 120 |
Fall n = 86 |
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| Exposure groups. |
Mean (95%CI) |
Mean (95%CI) |
Mean (95%CI) |
Mean (95%CI) |
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| Low spraying load < 7.2 |
93.4 (89.7;97.1) |
93.5 (88.8;98.2) |
23.1 (21.8;24.4) |
26.4 (24.2;28.7)a |
| High spraying load ≥ 7.2 |
94.4 (90.8;98.0) |
96.4 (92.5;100.3) |
20.7 (19.5;22.0)b |
22.1 (20.0;24.2)b |
| Spraying hours pr. year < 40 |
94.0 (90.4;97.7) |
93.8 (89.6;98.0) |
22.4 (21.1;23.7) |
24.6 (22.4;26.8)a |
| Spraying pr year ≥ 40 |
92.7 (89.1;96.2) |
96.9 (92.8;101.0) |
21.8 (20.6;23.1) |
23.7 (21.5;25.9) |
| Uses gloves always |
92.2 (85.7;98.6) |
93.5 (85.8;101.2) |
21.4 (19.1;23.6) |
23.5 (19.6;27.4) |
| Uses gloves sometimes |
93.2 (89.1;97.2) |
94.7 (89.7;99.7) |
21.5 (20.0;22.9) |
23.2 (20.5; 25.9) |
| Uses gloves never |
94.1 (90.3;98.0) |
96.5 (92.1;100.8) |
23.0 (21.6;24.4) |
25.0 (22.8;27.2)a |
| Exposure up to 8 years |
91.0 (87.3;94.7) |
93.7 (88.9;98.5) |
21.2 (19.9;22.6) |
22.8 (20.4;25.3) |
| Exposure more than 8 years |
95.4 (92.0;98.9) |
96.5 (92.7;100.2) |
22.9 (21.7;24.1) |
24.9 (23.0;26.9)a |
| Job task low exposure |
91.3 (87.1;95.5) |
96.6 (92.1;101.2) |
21.3 (19.7;22.8) |
22.9 (20.5;25.3)a |
| Job task medium exposure |
93.5 (90.1;97.0) |
95.5 (91.3;99.7) |
22.7 (21.4;24.0) |
24.3 (22.0;26.5) |
| Job task high exposure |
99.2 (91.5;106.9) |
89.1 (79.3;99.0) |
22.2 (19.5;25.0) |
27.6 (23.3;31.9) |
| All |
93.3 (90.8;95.9) |
95.4 (92.4;98.4) |
22.1 (21.2;23.0) |
24.1 (22.6;25.7)a |
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a) Difference in the fall sample from the spring sample in longitudinal analysis (p < 0.05). b) Difference from the low exposure group in cross-sectional analysis (p < 0.05). | ||||
Toft et al. Environmental Health: A Global Access Science Source 2006 5:32 doi:10.1186/1476-069X-5-32 |
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