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Table 2 In-hospital diagnostic tests, treatments, and procedures received by patients in tertiles of hospitals with regard to median length of stay

From: National trends in hospital length of stay for acute myocardial infarction in China

  All hospitals (n = 12706) High-tertile hospitals (n = 4784) Middle-tertile hospitals (n = 5105) Low-tertile hospitals (n = 2817) P-value
Diagnostic tests      
 Echocardiogram 6994 (55.0) 2765 (57.8) 2803 (54.9) 1426 (50.6) 0.6
 Ejection fraction      
 Available 6436 (50.7) 2497 (52.2) 2586 (50.7) 1353 (48.0) 0.8
 Mean ± std 54.0 ± 11.8 54.6 ± 11.8 53.9 ± 11.6 53.3 ± 12.3 0.5
 Biomarkers      0.04
  None 1338 (10.5) 393 (8.2) 466 (9.1) 479 (17.0)  
  CK only 855 (6.7) 263 (5.5) 399 (7.8) 193 (6.9)  
  CK-MB only 4685 (36.9) 2094 (43.8) 1650 (32.3) 941 (33.4)  
  Troponin only 395 (3.1) 112 (2.3) 231 (4.5) 52 (1.9)  
  CK-MB + Troponin 5433 (42.8) 1922 (40.2) 2359 (46.2) 1152 (40.9)  
Medications within 24 hours of admission      
 Aspirin 11209 (88.2) 4191 (87.6) 4591 (89.9) 2427 (86.2) 0.2
 Clopidogrel 7418 (58.4) 2739 (57.3) 3104 (60.8) 1575 (55.9) 0.7
 GP IIb/IIIa inhibitors 877 (6.9) 306 (6.4) 392 (7.7) 179 (6.4) 0.8
 Unfractionated heparin 9753 (76.8) 3740 (78.2) 3840 (75.2) 2173 (77.1) 0.6
 Low-molecular-weight heparin 6953 (54.7) 2692 (56.3) 2742 (53.7) 1519 (53.9) 0.8
 Beta-blockers 6328 (49.8) 2346 (49.0) 2657 (52.1) 1325 (47.0) 0.4
 Nitrates 10677 (84.0) 3989 (83.4) 4325 (84.7) 2363 (83.9) 0.9
 Traditional Chinese medicines 7251 (57.1) 2736 (57.2) 2680 (52.5) 1835 (65.1) 0.3
Medications during the hospitalization      
 Calcium channel blockers 2206 (17.4) 838 (17.5) 893 (17.5) 475 (16.9) 0.9
 ACEIs or ARBs 8345 (65.7) 3226 (67.4) 3311 (64.9) 1808 (64.2) 0.7
 Any Statins 9833 (77.4) 3683 (77.0) 4058 (79.5) 2092 (74.3) 0.5
 Traditional Chinese medicines 8605 (67.7) 3314 (69.3) 3210 (62.9) 2081 (73.9) 0.4
Reperfusion therapies among STEMI      
 Primary PCI 1307 (12.0) 506 (12.1) 606 (14.1) 195 (8.1) 0.5
 Fibrinolytic therapy 2637 (24.2) 1108 (26.4) 976 (22.7) 553 (23.0) 0.4
Cardiac procedures      
 Catheterization 3483 (27.4) 1357 (28.4) 1457 (28.5) 669 (23.8) 0.8
 PCI 3013 (23.7) 1165 (24.4) 1284 (25.2) 564 (20.0) 0.7
  1. CK: creatine kinase; CK-MB: creatine kinase MB fraction; ACEI: angiotensin converting enzyme inhibitor; ARB: angiotensin receptor blocker; STEMI: ST-segment elevation myocardial infarction; PCI: Percutaneous coronary intervention.
  2. Numbers in the second to the fifth columns represent count (percentage), unless otherwise specified.