Table 2 Comparison of patients’ data according to the Caprini risk assessment model
Variables | Pre-education period (n = 340), n (%) | Post-education period (n = 269), n (%) | Intervention period (n = 191), n (%) | Total (n = 800), n (%) | p1 | p2 | p3 |
|---|---|---|---|---|---|---|---|
Body mass index > 25 kg/m2 | 231 (67.9) | 180 (66.9) | 126 (66.0) | 537 (67.1) | > 0.05 | > 0.05 | > 0.05 |
Major surgery | 205 (60.3) | 176 (65.4) | 131 (68.6) | 512 (64.0) | > 0.05 | > 0.05 | > 0.05 |
41–60 years of age | 158 (46.5) | 126 (46.8) | 81 (42.4) | 365 (45.6) | > 0.05 | > 0.05 | > 0.05 |
History of cancer | 157 (46.2) | 104 (38.7) | 86 (45.0) | 347 (43.4) | > 0.05 | > 0.05 | > 0.05 |
Length of surgery over 2 h | 80 (23.4) | 77 (28.6) | 46 (24.1) | 203 (25.4) | > 0.05 | > 0.05 | > 0.05 |
Smoking within the last month | 85 (25.0) | 70 (26.0) | 45 (23.6) | 200 (25.0) | > 0.05 | > 0.05 | > 0.05 |
Laparoscopic surgery | 81 (23.8) | 62 (23.0) | 50 (26.2) | 193 (24.1) | > 0.05 | > 0.05 | > 0.05 |
61–74 years of age | 86 (25.3) | 56 (20.8) | 61 (31.9) | 203 (25.4) | > 0.05 | 0.007 | > 0.05 |
Minor surgery | 54 (15.9) | 31 (11.5) | 10 (5.2) | 95 (11.9) | > 0.05 | 0.030 | 0.002 |
Varicose veins | 41 (12.1) | 29 (10.8) | 20 (10.5) | 90 (11.2) | > 0.05 | > 0.05 | > 0.05 |
Serious infection | 26 (7.6) | 21 (7.8) | 9 (4.7) | 56 (7.0) | > 0.05 | > 0.05 | > 0.05 |
Swollen legs | 20 (5.8) | 24 (8.9) | 10 (5.2) | 54 (6.8) | > 0.05 | > 0.05 | > 0.05 |
Chemotherapy | 28 (8.2) | 14 (5.2) | 6 (3.1) | 48 (6.0) | > 0.05 | > 0.05 | > 0.05 |
Diabetes requiring insulin | 22 (6.5) | 10 (3.7) | 10 (5.2) | 42 (5.3) | > 0.05 | > 0.05 | > 0.05 |
History of unexplained stillborn | 18 (5.2) | 13 (4.8) | 10 (5.2) | 41 (5.1) | > 0.05 | > 0.05 | > 0.05 |
≥ 75 years of age | 11 (3.2) | 18 (6.7) | 12 (6.3) | 41 (5.1) | > 0.05 | > 0.05 | > 0.05 |
Family history of blood clots | 13 (3.8) | 13 (4.8) | 7 (3.7) | 33 (4.1) | > 0.05 | > 0.05 | > 0.05 |
Lung disease | 10 (2.9) | 14 (5.2) | 7 (3.7) | 31 (3.9) | > 0.05 | > 0.05 | > 0.05 |
Body mass index > 40 kg/m2 | 8 (2.4) | 8 (3.0) | 5 (2.6) | 21 (2.6) | > 0.05 | > 0.05 | > 0.05 |
History of venous thromboembolism | 6 (1.8) | 6 (2.2) | 4 (2.1) | 16 (2.0) | > 0.05 | > 0.05 | > 0.05 |
Current use of birth control or hormone replacement therapy | 8 (2.3) | 4 (1.4) | 7 (3.7) | 19 (2.4) | > 0.05 | > 0.05 | > 0.05 |
Confined to bed for 72 h or more | 6 (1.8) | 1 (0.4) | - | 7 (0.8) | > 0.05 | - | - |
Congestive heart failure | 1 (0.3) | 5 (1.9) | - | 6 (0.7) | > 0.05 | - | - |
Recurrent spontaneous abortion (3 or more) | 4 (1.1) | 1 (0.3) | 1 (0.5) | 6 (0.7) | > 0.05 | > 0.05 | > 0.05 |
History of inflammatory bowel disease | 1 (0.3) | 2 (0.7) | - | 3 (0.4) | > 0.05 | - | - |
Blood transfusion(s) | - | 3 (1.1) | - | 3 (0.4) | - | - | - |
Pregnant or had a baby within the last month | 1 (0.5) | 1 (0.6) | - | 2 (0.3) | > 0.05 | - | - |
Central venous access | 1 (0.3) | 1 (0.4) | - | 2 (0.3) | > 0.05 | - | - |
Lupus anticoagulant | 1 (0.3) | 1 (0.4) | - | 2 (0.3) | > 0.05 | - | |
Human Immunodeficiency Virus infection | - | 1 (0.4) | 1 (0.5) | 2 (0.3) | - | > 0.05 | - |
Inherited thrombophilia | 2 (0.6) | - | - | 2 (0.3) | - | - | - |
Factor V Leiden mutation | 1 (0.3) | - | 2 (1.0) | 3 (0.4) | - | - | - |
On bed rest or restricted mobility, including a removable leg brace for less than 72 h | 1 (0.3) | - | - | 1 (0.1) | - | - | - |
Antiphospholipid antibodies | 1 (0.3) | - | - | 1 (0.1) | - | - | - |
Total Score Category | |||||||
0 (very low risk) | - | - | - | - | - | - | - |
1–2 (low risk) | 28 (8.2) | 11 (4.1) | 3 (1.6) | 42 (5.3) | 0.056 | 0.169 | 0.001 |
3–4 (moderate risk) | 73 (21.5) | 72 (26.8) | 51 (26.7) | 196 (24.5) | 0.128 | 0.988 | 0.217 |
> 5 (high risk) | 239 (70.3) | 186 (69.1) | 137 (71.7) | 562 (70.2) | 0.759 | 0.551 | 0.633 |