Skip to main content

Table 4 Univariate analysis of laboratory-related variables

From: Incidence and predictors of surgical site infection after distal femur fractures treated by open reduction and internal fixation: a prospective single‐center study

Variables All patients
(n = 364)
Patients without SSI (n = 342) Patients with SSI(n = 22) p value
WBC (109/L)     0.420c
 References (4–10), n(%) 208(57.1) 198(57.9) 10(45.5)  
 > 10, n(%) 152(41.8) 140(40.9) 12(54.5)  
NEUT (109/L)     0.476c
 References (1.8–6.3), n(%) 142(39.0) 135(39.5) 7(31.8)  
 > 6.3, n(%) 222(61.0) 207(60.5) 15(68.2)  
LYM (109/L)     0.812c
 References (1.1–3.2), n(%) 209(57.4) 195(57.0) 14(63.6)  
 < 1.1, n(%) 154(42.3) 146(42.7) 8(36.4)  
MON (109/L)     0.818c
 References (0.1–0.6), n(%) 124(34.1) 117(39.5) 7(31.8)  
 > 0.6, n(%) 240(65.9) 225(65.8) 15(68.2)  
EOS (109/L)     0.829c
 References (0.02–0.52), n(%) 265(72.8) 248(72.5) 17(77.3)  
 < 0.02, n(%) 96(26.4) 91(26.6) 5(22.7)  
BAS (109/L)     0.408c
 References (0–0.06), n(%) 332(91.2) 313(91.5) 19(86.4)  
 > 0.06, n(%)   29(8.5) 3(14.0)  
RBC (1012/L)     0.076c
 References, n(%) 110(30.2) 107(31.3) 3(13.6)  
 <Lower limit, n(%) 263(72.3) 244(68.7) 19(86.4)  
PLT (109/L)     0.209c
 References (125–300), n(%) 215(59.1) 206(60.2) 9(40.9)  
 < 125, n(%) 22(6.0) 20(5.8) 2(9.1)  
 > 300, n(%) 127(34.9) 116(33.9) 11(50.0)  
 TP (< 65 g/L) 280(76.9) 264(77.2) 16(72.7) 0.630c
 ALB(g/L), mean ± SD 33.8 ± 5.7 34.0 ± 5.6 30.5 ± 6.3 0.017a*
 ALB (< 30 g/L), n(%) 103(28.3) 91(26.6) 12(11.7) 0.005c*
 GLOB (< 20 g/L), n(%) 73(20.1) 71(20.8) 2(9.1) 0.294c
 A/G, mean ± SD 1.5 ± 0.4 1.5 ± 0.4 1.2 ± 0.3 < 0.001a*
A/G     0.001c*
 < 1.35, n(%) 168(46.2) 150(44.0) 18(81.8)  
 ≥ 1.35, n(%) 196(53.8) 192(56.0) 4(18.2)  
GLU (mmol/L)     0.766c
 References (3.9–6.1), n(%) 160(44.0) 151(44.2) 9(40.9)  
 > 6.1, n(%) 204(56.0) 191(55.8) 13(51.9)  
  1. Abbreviation: SSI surgical site infection, WBC white blood cell, NEUT neutrophile, LYM lymphocyte, MON monocyte, EOS eosinophils, BAS basophilic, PLT platelet, TP total protein, ALB albumin, GLOB globulin, A/G albumin/globulin, RBC red blood cell, reference range(1012/L): females 3.5-5.0; males 4.0-5.5.
  2. a Student t test.
  3. c Pearson Chi-Square test.
  4. * indicates significant variable at p < 0.05.