Table-I.

Clinical characteristics of the two groups.

Factors	DVT	Non-DVT	P value
	n=67	n=554
Age (> 55 years) (n, %)	55(82.1%)	285(51.4%)	0.0002
Gender (M/F)	35/32	310/244	0.56
Hypertension (n, %)	47(70.1%)	261(47.1%)	0.0003
Hyperlipemia	45(67.2%)	284(51.3%)	0.01
Coronary heart disease (n, %)	36(53.7%)	257(46.4%)	0.26
Diabetes (n, %)	11(16.4%)	121(21.8%)	0.31
Adenocarcinoma (n, %)	41(61.2%)	267(48.2%)	0.04
Tumor staging			0.00
Stage I	5	152
Stage II	11	218
Stage III	23	137
Stage IV	28	47
Surgical treatment (n, %)	65(97.0%)	512(92.4%)	0.16
Operation time>3 hours (n, %)	38(56.7%)	389(70.2%)	0.02
Rehabilitation exercises (n, %)	19(28.4%)	251(45.3%)	0.008
Chemotherapy (n, %)	34(50.7%)	260(46.9%)	0.55
Radiotherapy (n, %)	37(55.2%)	219(39.5%)	0.01
Hospital stay(days)	28.9±5.2	22.7±6.2	0.07