Prevalence of preoperative Deep Venous Thrombosis (DVT) following elderly intertrochanteric fractures and development of a risk prediction model

Table 1 The AUC used to evaluate the ability to distinguish between DVT and non-DVT patients, and to determine the optimal cut-off value for some variables with significance (p < 0.05)

Variable	AUC	95%CI		SE	P	Optimal Cut-off value
Variable	AUC	Lower limit	Upper limit	SE	P	Optimal Cut-off value
D-dimer	0.582	0.525	0.640	0.029	*0.006	1.0 mg/L
TT	0.563	0.510	0.616	0.027	*0.035	15.5 s
PT	0.576	0.521	0.631	0.028	*0.012	11.5 s
ALB	0.614	0.559	0.668	0.028	* < 0.001	32.5 g/L
RBC	0.559	0.503	0.615	0.028	*0.050	2.7*10¹²/L
HCT	0.559	0.505	0.614	0.028	*0.049	34%
Platelet	0.573	0.515	0.634	0.030	0.014	214*10⁹/L
PLR	0.587	0.529	0.645	0.029	*0.004	174
TC	0.575	0.516	0.634	0.030	0.012	3.45
TG	0.516	0.458	0.574	0.030	0.593	NA
WBC	0.494	0.436	0.553	0.030	0.848	NA
Neutrophil	0.499	0.441	0.558	0.030	0.985	NA
FIB	0.514	0.456	0.572	0.030	0.636	NA
FDP	0.540	0.485	0.595	0.028	0.184	NA
APTT	0.534	0.477	0.591	0.029	0.263	NA
PDW	0.545	0.486	0.603	0.030	0.136	NA
RDW	0.521	0.460	0.581	0.031	0.495	NA
HCRP	0.517	0.461	0.573	0.029	0.573	NA
Sodium	0.552	0.489	0.614	0.032	0.087	NA
FBG	0.529	0.472	0.585	0.029	0.341	NA
NLR	0.518	0.458	0.578	0.031	0.542	NA
HGB	0.558	0.502	0.613	0.028	0.054	NA

Abbreviations TT thrombin time, PT prothrombin time, PTT, activated partial thromboplastin time, ALB albumin, RBC red blood cell, HCT hematocrit, HGB hemoglobin, PLR platelet to lymphocyte ratio, NLR neutrophile to lymphocyte ratio, FIB fibrinogen, WBC white blood cell, PDW platelet distribution width, RDW red cell distribution width, HCRP Hypersensitive C-reactive protein, FBG fasting blood glucose, TG triglyceride, TC total cholesterol, AUC area under curve, CI confidence interval, SE standard error, ND not available

ISSN: 1471-2474