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Table 1 Characteristics of the included studies

From: Pooled prevalence of deep vein thrombosis among coronavirus disease 2019 patients

Authors Sample Age Male (%) Location Design of studies Screening of DVT ICU/non-ICU* Prophylaxis (%) DVT (%)
Zhang et al. (PMID: 32421381) 143 63 (mean) 74 (51.7) China Cross-sectional study Ultrasound N/R 53 (37.1) 66 (46.2)
Ren et al. (PMID: 32412320) 48 70 (median) 26 (54.2) China Cross-sectional study Ultrasound ICU 47 (97.9) 41 (85.4)
Demelo-Rodríguez et al. (PMID: 32405101) 156 68.1 (mean) 102 (65.4) Spain Prospective study Ultrasound Non-ICU 153 (98.1) 23 (14.7)
Middeldorp et al. (PMID: 32369666) 198 61 (mean) 130 (65.7) Netherlands Retrospective study Ultrasound ICU/non-ICU 198 (100) 26 (13.1)
Bi et al. 420 45 (mean) 200 (47.6) China Prospective study N/R N/R N/R 6 (1.4)
Klok et al. (PMID: 32291094) 184 64 (mean) 139 (75.5) Netherlands Prospective study Ultrasound ICU 184 (100) 1 (0.5)
Karmen-Tuohy et al. 63 61 (mean) 57 (90.5) USA Prospective study N/R N/R N/R 2 (3.2)
Llitjos et al. (PMID: 32320517) 26 68 (median) 20 (76.9) France Retrospective study Ultrasound ICU 8 (30.8) 14 (53.8)
Lodigiani et al. (PMID: 32353746) 388 66 (median) 264 (68.0) Italy Retrospective study Ultrasound ICU/non-ICU 307 (79.1) 6 (1.7)§
Helms et al. (PMID: 32367170) 150 63 (median) 122 (81.3) France Prospective study Imaging ICU 150 (100) 3 (2.0)
Stoneham et al. (PMID: 32423903) 274 N/R N/R UK Prospective study Imaging N/R N/R 5 (1.8)
Galeano-Valle et al. (PMID: 32425261) 785 N/R N/R Spain Prospective study Ultrasound Non-ICU 780 (99.4) 13 (1.7)
Xing et al. (PMID: 32345353) 20 N/R 12 (60.0) China Retrospective study Ultrasound N/R N/R 7 (35.0)
Beyls et al. (PMID: 32414510) 12 62 (median) 10 (83.3) France Retrospective study Ultrasound N/R N/R 6 (50.0)
Poissy et al. (PMID: 32330083) 107 N/R N/R France Retrospective study Ultrasound ICU 107 (100) 5 (4.7)
Beun et al. (PMID: 32311843) 75 N/R N/R Netherlands Retrospective study N/R ICU N/R 3 (4.0)
Cattaneo et al. (PMID: 32349132) 64 70 (median) 35 (54.7) Italy Retrospective study Ultrasound Non-ICU 64 (100) 0 (0.0)
Tavazzi et al. (PMID: 32322918) 54 N/R N/R Italy Retrospective study Ultrasound ICU 54 (100) 8 (14.8)
Voicu et al. (PMID: 32479784) 56 N/R 42 (75.0) France Prospective study Ultrasound ICU 49 (87.5) 26 (46.4)
Hippensteel et al. (PMID: 32484907) 91 56.5 (mean) 53 (58.2) USA Retrospective study Ultrasound ICU N/R 11 (12.1)
Fraissé et al. (PMID: 32487122) 92 61 (median) 73 (79.3) France Retrospective study N/R ICU 92 (100) 6 (6.5)
Desborough et al. (PMID: 32485437) 66 59 (median) 48 (72.7) UK Retrospective study Imaging ICU 66 (100) 6 (9.1)
Al-Samkari et al. (PMID: 32492712) 400 61.8 (mean) 228 (57.0) USA Retrospective study Imaging N/R 400 (100) 10 (2.5)
Edler et al. (PMID: 32500199) 80 79.2 (mean) 46 (57.5) Germany Prospective study N/R N/R N/R 32 (40.0)
Grandmaison et al. (PMID: 32529170) 58 N/R N/R Switzerland Cross-sectional study Ultrasound ICU/non-ICU N/R 28 (48.3)
Artifoni et al. (PMID: 32451823) 71 64 (median) 43 (60.6) France Retrospective study Ultrasound Non-ICU 70 (98.6) 15 (21.1)
Nahum et al. (PMID: 32469410) 34 62.2 (mean) 25 (73.5) France Prospective study Ultrasound ICU 34 (100) 27 (79.4)
Zhang et al. (PMID: 32553905) 23 44.7 (mean) 15 (65.2) China Prospective study N/R ICU/non-ICU N/R 1 (4.3)
  1. DVT deep vein thrombosis, ICU intensive care unit, N/R not (clearly) reported
  2. *Articles clearly reported the prevalence of DVT in COVID-19 patients treated in ICU or non-ICU
  3. doi: https://doi.org/10.1101/2020.04.22.20076190
  4. doi: https://doi.org/10.1101/2020.05.07.20094797
  5. §Data missing for patients