Table 2.

Crude odds ratios for subgroups

Above 90th percentile (> 129 U/dL) Below 90th percentile (≤ 129 U/dL) Odds ratio (95% CI)
All (n = 899)  
 Patients  86  340 2.3 (1.6-3.5)  
 Controls  46  427  
Sex 
 Men (n = 373)  
  Patients  29  143 1.9 (1.0-3.6)  
  Controls  19  182 
 Women (all) (n = 526)  
  Patients  57  197 2.6 (1.6-4.3)  
  Controls  27  245  
Use of oral contraceptives* 
 Yes (premenopausal) (n = 77) 
  Patients  10  20  1.5 (0.5-4.0) 
  Controls  12  35  
 No (premenopausal) (n = 130) 
  Patients  12  28  12.4 (3.3-47.2) 
  Controls  3  87  
 No (postmenopausal) (n = 148) 
  Patients  21  39  6.2 (2.4-15.9) 
  Controls  7  81  
Age (y)  
 < 45 (n = 453) 
  Patients  37  180  2.5 (1.4-4.5) 
  Controls  18  218  
 ≥ 45 (n = 446) 
  Patients  49  160  2.3 (1.4-3.8) 
  Controls  28  209 
Above 90th percentile (> 129 U/dL) Below 90th percentile (≤ 129 U/dL) Odds ratio (95% CI)
All (n = 899)  
 Patients  86  340 2.3 (1.6-3.5)  
 Controls  46  427  
Sex 
 Men (n = 373)  
  Patients  29  143 1.9 (1.0-3.6)  
  Controls  19  182 
 Women (all) (n = 526)  
  Patients  57  197 2.6 (1.6-4.3)  
  Controls  27  245  
Use of oral contraceptives* 
 Yes (premenopausal) (n = 77) 
  Patients  10  20  1.5 (0.5-4.0) 
  Controls  12  35  
 No (premenopausal) (n = 130) 
  Patients  12  28  12.4 (3.3-47.2) 
  Controls  3  87  
 No (postmenopausal) (n = 148) 
  Patients  21  39  6.2 (2.4-15.9) 
  Controls  7  81  
Age (y)  
 < 45 (n = 453) 
  Patients  37  180  2.5 (1.4-4.5) 
  Controls  18  218  
 ≥ 45 (n = 446) 
  Patients  49  160  2.3 (1.4-3.8) 
  Controls  28  209 
*

At time of thrombosis (or similar index date for controls) as well as at time of venipuncture (16 of the 153 premenopausal women mentioned earlier changed their oral contraceptive use and were therefore excluded from this analysis).

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