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Table 1 Patient and hospital characteristics by level of care

From: Do inter-hospital comparisons of in-hospital, acute myocardial infarction case-fatality rates serve the purpose of fostering quality improvement? An evaluative study

  Level of care
  Type A Type B1 Type B2-B3
Patient charateristics        
Age N % CFR N % CFR N % CFR
<40 y 217 1.5 2.8 133 1.9 3.8 508 2.1 4.7
40-59 y 988 6.7 5.6 656 9.1 3.8 2,331 9.6 4.3
50-59 y 2,047 13.9 6.4 1,226 17.1 6.0 4,721 19.4 4.7
60-69 y 2,643 18.0 10.2 1,242 17.3 10.1 5,13 21.0 8.7
70-79 y 4,165 28.3 19.0 1,971 27.4 16.2 6,705 27.5 15.4
80 y+ 4,641 31.6 30.5 1,959 27.3 30.6 5,004 20.5 29.2
Gender          
   Males 9,095 61.9 15.2 4,475 62.3 12.7 16,708 68.5 11.3
   Females 5,606 38.1 22.9 2,712 37.7 21.4 7,691 31.5 18.1
   Total 14,701   18.1 7,187   16.0 24,399   13.5
Shock          
   Present 1,313 8.9 75.5 611 8.5 80.2 2,294 9.4 68.2
   Absent 13,388 91.1 12.5 6575 91.5 10.0 22105 90.6 7.8
Type of AMI          
STEMI 1,497 63.0 16.18 775 73.1 14.76 2,036 67.3 12.39
NSTEMI 251 14.2 7.48 88 9.5 7.03 366 13.0 7.61
AMI NOS 917 22.8 43.9 285 17.4 41.67 884 19.7 27.97
Hospital characteristics        
Number 61    19    29   
Volume 2002-5, transfers out excluded          
Minimum 95    239    312   
Lower quartile 149    277    584   
Median 194    355    776   
Mean 241    378    841   
Upper quartile 309    487    1122   
Maximum 817    660    1596   
Volume 2002-5, all transfers excluded          
Minimum 69    133    292   
Lower quartile 123    200    484   
Median 174    265    685   
Mean 201    281    708   
Upper quartile 249    332    801   
Maximum 798    542    1448   
  1. Patient characteristics:
  2. N: number of cases; %: column percentage; CFR: AMI-CFR in %
  3. STEMI: ST-segment elevation myocardial infarction; NSTEMI: non-ST-segment elevation myocardial infarction; AMI NOS: AMI not otherwise specified.
  4. Level of care: community hospitals (labeled A) having no catheterization facility, intermediary hospitals (labeled B1) providing coronary angiography but no Percutaneous Coronary Intervention (PCI), and tertiary hospitals (labeled B2-B3) offering PCI and/or Coronary Artery Bypass Graft.
  5. Hospital characteristics:
  6. Minimum, Maximum: minimum and maximum number of observations per type of hospital
  7. Lower quartile, Median, Mean, Upper quartile: percentiles of the distribution of the number of observations per type of hospital