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Table 1 Comparison between group 1 and group 2 in all variables collected

From: Prevalence and risk factors of preoperative deep venous thrombosis in closed patella fracture: a prospective cohort study

Variables Group 1 (n = 755) Group 2 (n = 35) p
Number (%) Number (%)
Gender(male) 445 (58.9) 24 (68.6) .257
Age category    .003
 18< Age ≤ 44 years 242 (32.1) 8 (22.9)  
 45 ≤ Age < 64 years 367 (48.6) 12 (34.3)  
 Age ≥ 65 years 146 (19.3) 15 (42.9)  
BMI (kg/m2)    .973
 18.5–23.9 455 (60.3) 23 (65.7)  
 < 18.5 25 (3.3) 1 (2.9)  
 24.0–27.9 202 (26.8) 8 (22.9)  
 ≥ 28.0 73 (9.7) 3 (8.6)  
Current smoking 99 (13.1) 5 (14.3) .799
Alcohol consumption 68 (9.0) 7 (20.0) .030
Living place (rural) 392 (51.9) 20 (57.1) .545
Diabetes mellitus 81 (10.7) 4 (11.4) .783
Hypertension 167 (22.1) 8 (22.9) .918
Ischemic heart disease 52 (6.9) 2 (5.7) .566
Arrhythmia 34 (4.5) 3 (8.6) .222
Chronic lung diseases 11 (1.5) 1 (2.9) .422
History of cerebral infarction 34 (4.5) 3 (8.6) .222
History of any surgery 130 (17.2) 4 (11.4) .372
Injury mechanism (high energy) 91 (12.1) 10 (28.6) .009
Fracture type (comminuted) 78 (10.3) 6 (17.1) .253
TP (< 60 g/L) 360 (47.7) 20 (57.1) .273
ALB (< 35 g/L) 221 (29.3) 21 (60.0) .000
FBG (> 6.1 mmol/L) 228 (30.2) 9 (25.7) .571
TC (> 5.2 mmol/L) 63 (8.3) 3 (8.6) .962
TG (> 1.7 mmol/L) 160 (21.2) 6 (17.1) .565
LDL-C (> 3.37 mmol/L) 205 (27.2) 15 (42.9) .043
VLDL (> 0.78 mmol/L) 158 (20.9) 6 (17.1) .589
HDL-C (< 1.1 mmol/L) 206 (27.3) 11 (31.4) .591
WBC (> 10 × 109/L) 152 (20.1) 6 (17.1) .666
NEUT (> 6.3 × 109/L) 268 (35.5) 8 (22.9) .125
LYM (< 1.1 × 109/L) 121 (16.0) 6 (17.1) .860
RBC (< lower limit) 167 (22.1) 7 (20.0) .767
HGB (< lower limit) 174 (23.0) 6 (17.1) .416
HCT (< lower limit) 141 (18.7) 6 (17.1) .820
PLT (> 300 × 109/L) 47 (6.2) 6 (17.1) .024
RDW (> 16.5%) 7 (0.9) 1 (2.9) .305
PDW (> 18.1%) 16 (2.1) 1 (2.9) .541
D-dimer (> 0.5 mg/L) 352 (46.6) 27 (77.1) .000
  1. DVT deep venous thrombosis, BMI body mass index, RBC red blood cell, reference range: female, 3.5–5.0 × 1012/L, males, 4.0–5.5 × 1012/L, HGB hemoglobin, reference range: females, 110–150 g/L, males, 120–160 g/L, FBG fasting blood glucose, HCT hematocrit, 40–50%, WBC white blood cell, NEUT neutrophile, LYM lymphocyte, PLT platelet, 100–300 × 109/L, TP total protein, ALB albumin, RDW red cell distribution width, PDW platelet distribution width, TC total cholesterol, TG triglyceride, LDL-C low-density lipoprotein cholesterol, HDL-C high-density lipoprotein cholesterol, VLDL very-low-density lipoprotein