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Table 8 Studies that found influence of severity on asthma- related costs

From: Economic burden of asthma: a systematic review

     Severity  
     Intermittent Mild Moderate Severe Subgroups
References No. Country Study duration Total n n Cost n Cost n Cost n cost  
Institutional
11 US 1 yr 401 - - 200 3339 137 5,716 64 16,168  
13 Spain 1 yr 333 - - 140 257,979 116 385,239 77 679,091  
15 Canada 1 yr 940 - -    1,799   2,466    4,344 Societal perspective
       - 256 744 459 862 225 1,192 Ministry perspective
       -    877   1,079    1,763 patient perspective
19 Turkey 1 yr 118 4 202 54 1,006 46 1,954 14 4,081  
21 US 1 yr 3002 - - 787 5,390 1194 6,838 988 9,020  
23 France 1 yr 318 32 435 78 1,134 91 1,977 33 4,598  
27 Sweden 1 yr 115 53    359   62   4,473   
30 France 1 yr 261 - - 108 606 58 704 63 561 Good control
       -    1,184   808    1,426 Moderate control
       -    329   741    4,476 Poor control
35 Switzerland 1 yr 422 14 511 31 1,440 42 3,487 72 5,228  
36 US 1 yr 3223 515 2,875 431 3,973 101 6,303 27 19,820  
46 Thailand 1 yr 511 - 104 - 125 - 182 - 224  
52 Spain 3 mo 126 - - - 515 - 1,926 - 5,544  
53 US 1 yr 1038 - - - 536 - 1,255 - 627 Good control
       - 354 651 200 1,119 347 1.214 Moderate control
       -    1,903   1,953    1,808 Poor control
57 France 1 yr 169 66    3,942   53   4,608   Group P
     23    4,527   27   9,574   Group A
62 Turkey 1 yr 183 - - 124 806 36+23   1,729   
67 US 2 yrs 2213 - - 1,007 463 237 374 969 2,362  
41 Australia 1 yr 193 No visits One visit/yr 2 Visits/yr >2 Visits/yr Urgent visit Hospitalization  
     n $ n $ n $ n $ n $ n $  
     35 80 26 195 38 207 55 202 31 298 8 819  
Regional
50 Denmark 1 yr 115 16 755 47 8,856 48 13,201 4 40,677  
17 Italy 1 yr 500 174 1,165 134 1,692 153 2,507 39 5,382  
National
66 11 countries 1 yr 1201 - 1,143 - 1,113 - 1,213 - 1,480  
  10 countries   1124              
  1. All costs are converted and adjusted into 2008 US dollars
  2. Group P: not managed; group A: managed; * Cost information of studies 31 and 22 were not available.