Hospital factors
Responding hospital
Annual delivery
No. (%) No. (%)
Hospital type
Type of hospital
Tertiary hospitals 89(78.9) * 680658(88.3) *
Secondary hospitals 23(20.4) 88270(11.5)
Primary hospitals 1(0.9) 1900(0.2)
Characteristics of hospital
General hospitals 71(62.8) * 286717(37.2) *
Specialized hospitals 42(37.2) 484111(62.8)
Cesarean rate
0-30% 17(15.0) * 41818(5.4) *
30%-50% 69(61.1) 570625(74.0)
>50% 27(23.9) 158385(20.5)
System and strategy
VTE management system
Yes 97(85.8) * 670076(86.9) *
No 16(14.2) 100752(13.1)
VTE risk assessment scale
Yes 85(75.2) * 592703(76.9) *
No 28(24.8) 178125(23.1)
Emergency transfer/consultation
Yes 109(96.5) * 751778(97.5) *
No 4(3.5) 19050(2.5)
Diagnosis and treatment
D-dimer
Yes 112(99.1) * 760568(98.7) *
No 1(0.9) 10260(1.3)
B ultrasound of lower extremity vein
Yes 104(92.0) * 717367(93.1) *
No 9(8.0) 53461(6.9)
CTPA
Yes 91(80.5) * 644735(83.6) *
No 22(19.5) 126093(16.4)
Anticoagulants
Yes 92(81.4) * 665850(86.4) *
No 21(18.6) 104978(13.6)
Elastic stockings/compression device
Yes 99(87.6) * 657828(85.3) *
No 14(12.4) 113001(14.7)
Patient education
Health education
Yes 92(81.4) * 577280(74.9) *
No 21(18.6) 193548(25.1)
Early mobilization
Yes 108(95.6) * 748332(97.1) *
No 5(4.4) 22496(2.9)
Mobilization after vaginal delivery
The same day 102(90.3) * 728593(94.5) *
One day after or later 11(9.7) 42235(5.5)
Mobilization after Cesarean section
The same day or one day after 98(86.7) * 722911(93.8) *
Two days or later 15(13.3) 47917(6.2)
Total 113(100.0) 770828(100.0)