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Table 2 Summary of patient characteristics at baseline

From: Oral anticoagulation with vitamin K inhibitors and determinants of successful self-management in primary care

   Usual monitoring Self- management p-value
Patients, n   333   333   
Sex, n (%) Male 160 (48.0) 218 (65.5) p < 0.0001
  Female 173 (52.0) 115 (34.5)  
Age, mean (SD) Male 75.7 (9.2) 69.5 (11.9) p < 0.0001
  Female 77.7 (8.5) 73.5 (13.8)  
Reason for OAT, n (%) Heart arrhythmia due to atrial fibrillation 242 (72.7) 221 (66.4) 0.051
  Aortic prosthesis 24 (7.2) 43 (12.9)  
  Deep vein thrombosis 15 (4.5) 23 (6.9)  
  Mitral valve prosthesis 17 (5.1) 17 (5.1)  
  Pulmonary thromboembolism 21 (6.3) 10 (3.0)  
  Cerebrovascular accident 7 (2.1) 5 (1.5)  
  Deficit proteins 0 (0.0) 4 (1.2)  
  Others 3 (0.9) 4 (1.2)  
  Valvular heart disease 3 (0.9) 4 (1.2)  
  Ischemic heart disease 1 (0.3) 2 (0.6)  
INR ranges n (%) 1.5–2.5 0 (0.0) 1 (0.3) 0.029
  2.0–3.0 287 (86.2) 264 (79.3)  
  2.5–3.5 46 (13.8) 68 (20.4)  
Length of treatment, 1–3 96 (29.0) 85 (25.7) 0.77
years (%) 4–7 105 (31.7) 106 (32.0)  
  8–10 52 (15.7) 54 (16.3)  
  >10 78 (23.6) 86 (26.0)  
Risk factors, Arterial hypertension 217 (37.8) 196 (37.9) 0.132
n (%) Diabetes mellitus 85 (14.8) 69 (14.4)  
  Hyperlipaemia 169 (29.5) 180 (34.1)  
  Cancer 50 (9.2) 35 (6.8)  
  Liver disease 6 (1.3) 14 (1.5)  
  Kidney disease 40 (7.4) 32 (5.3)  
Polypharmacy, n (%) 1–3 drugs 70 (21.3) 102 (39.5) p < 0.0001
  4–7 drugs 139 (42.6) 156 (37.2)  
  8–12 drugs 108 (30.9) 59 (19.8)  
  13 or more drugs 16 (5.1) 16 (3.5)  
Other, Independent 226 (67.9) 219 (65.8) 0.621
n (%) Caregiver 107 (32.1) 114 (34.2)