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Table 1 Characteristics of adopters

From: Diffusion patterns of new anti-diabetic drugs into hospitals in Taiwan: the case of Thiazolidinediones for diabetes

  Long-term adopters   Short-term adopters   Non-adopters   P-value
  N % N % N %  
Total 327 100 48 100 205 100  
   Accreditation level        
   Medical Center 18 5 0 0 1 0  
   Regional Hospital 68 21 2 4 8 4  
   District Hospital 241 74 46 96 196 96 0.00004
Ownership        
   Public Hospital 67 20 7 15 17 8  
   Non-profit Hospital 65 20 3 6 4 2  
   Private Hospital 195 60 38 79 184 90 0.00004
BNHI Regions        
   Taipei 78 24 12 25 26 13  
   Northern 49 15 6 12 23 11  
   Central 81 25 5 10 40 20  
   Southern 49 15 9 19 40 20  
   Kao-Ping 59 18 14 29 72 35  
   Eastern 11 3 2 5 4 1 0.00034
  mean Std mean Std mean Std  
Herfindahl-Hirschman Indexes1 (HHI) 0.339 0.137 0.45 0.180 0.57 0.223 0.00005
Number of doctors who prescribed TZD drug 34.02 66.97 4.86 5.16 - -  
Initial TZD use after TA (month) 15.19 11.61 36.79 16.00 - -  
Total DDD of DM2 (DDD) 37917.47 77383.05 8468 12601 2243 3958 0.00005
  mean Std      
Maximum monthly TZD penetration3 0.117 0.067 - - - -  
Time between initial adoption and the maximum penetration (month) 26.14 13.16 - - - -  
  mean Std      
Peak use (maximum monthly prescription of TZD in DDD) 6970.01 12678.72 - - - -  
The time between initial adoption to the maximum prescription of TZD (month) 27.02 13.17 - - - -  
Prescription Speed (monthly growth on TZD prescription in DDD) 252.65 374.31 - - - -  
Maximum prescription in DDD        
25% quantile   924.83 - - - -  
50% quantile   2488 - - - -  
75% quantile   6454.83 - - - -  
Rate of penetration        
25% quantile   39.99 - - - -  
50% quantile   111.22 - - - -  
75% quantile   293.97 - - - -  
  1. 1: concentration index for hospitals in February, 2001
  2. 2: the total DDD of DM drugs in February, 2001
  3. 3: Maximum TZDs DDD/all DM drugs DDD
  4. 4: χ2 test
  5. 5: one-way ANOVA