From: A prospective study of androgen levels, hormone-related genes and risk of rheumatoid arthritis
 | Quartile 1 | Quartile 2 | Quartile 3 | Quartile 4 | P trenda | P continuousb |
---|---|---|---|---|---|---|
Free testosterone | Â | Â | Â | Â | Â | Â |
   Median (controls) | 0.028 | 0.046 | 0.061 | 0.085 |  |  |
   Cases/controls | 25/98 | 36/98 | 37/98 | 33/98 |  |  |
   Unadjustedc | 1.0 | 1.6 (0.8 to 2.9) | 1.7 (0.9 to 3.2) | 1.5 (0.8 to 3.0) | 0.36 | 0.51 |
   Adjustedd | 1.0 | 1.5 (0.8 to 2.8) | 1.6 (0.8 to 3.3) | 1.7 (0.8 to 3.5) | 0.24 | 0.44 |
Total testosterone | Â | Â | Â | Â | Â | Â |
   Median (controls) | 11.0 | 18.0 | 23.0 | 34.0 |  |  |
   Cases/controls | 32/104 | 33/103 | 31/96 | 36/92 |  |  |
   Unadjustedc | 1.0 | 1.1 (0.6 to 1.9) | 1.1 (0.6 to 2.1) | 1.4 (0.7 to 2.5) | 0.32 | 0.75 |
   Adjustedd | 1.0 | 1.1 (0.6 to 2.0) | 1.2 (0.6 to 2.4) | 1.5 (0.8 to 2.9) | 0.20 | 0.52 |
Dehydroepiandrosterone sulfate | Â | Â | Â | Â | Â | Â |
   Median (controls) | 30.58 | 56.16 | 93.10 | 158.20 |  |  |
   Cases/controls | 40/98 | 20/98 | 37/98 | 34/98 |  |  |
   Unadjustedc | 1.0 | 0.5 (0.3 to 0.9) | 0.9 (0.5 to 1.6) | 0.8 (0.5 to 1.5) | 0.85 | 0.51 |
   Adjustedd | 1.0 | 0.5 (0.3 to 1.0) | 0.9 (0.5 to 1.5) | 0.7 (0.4 to 1.4) | 0.66 | 0.71 |