Table 2.

Chronic graft-versus-host disease in the training and testing sets

VariableIBMTR-1 n = 727IBMTR-2 n = 421NMDP n = 378
Designation Training Validation Validation 
Median time to onset cGVHD, d (range) 136 (60-1327) 140 (60-1266) 122 (66-1127)  
Type of onset, n (%)    
 Progressive 157 (22) 132 (31)  73 (19)2-153 
 Interrupted 314 (43) 138 (33) 260 (69)  
 De novo 256 (35) 151 (36)  45 (12)  
Prior acute GVHD, n (%) 470 (65) 270 (64) 333 (88)2-153 
Median platelet count at onset × 109/L (range) 131 (5-999) 114 (0-548)  91 (1-448)2-153 substantial missing data 
Karnofsky performance status at onset, median (range)  80 (20-100)  80 (20-100)  70 (20-100)2-153 substantial missing data 
Total bilirubin > 2 mg/dL at onset2-153, n (%) Not collected  55 (16) substantial missing data  21 (22) substantial missing data 
Chronic GVHD, n (%)    
 Limited 350 (48) 225 (54)  58 (15)2-153 
 Extensive 377 (52) 191 (46) 319 (85)  
Severity at onset, n (%)    
 Mild 381 (52) 215 (51) Not collected 
 Moderate 247 (34) 142 (34)  
 Severe  99 (14)  62 (15)  
New cGVHD grade, n (%)    
 Low risk 365 (50) 256 (61)*  64 (34) 
 Intermediate risk 232 (32)  98 (23)  79 (42) 
 High risk 130 (18)  67 (16)  45 (24)  
 Not able to classify, n    190  
Treatment, %    
 Cyclosporine  60  812-153  932-153 
 Tacrolimus Not collected   4 Not collected 
 Topical steroids  15  18  17  
 Systemic steroids  81  84  952-153 
 ATG/ALS   2   6   6 
 Azathioprine  14  11  14 
 Thalidomide   9   8  12  
Resolution of cGVHD2-155, n (%) 245 (34) Not collected Not collected  
Time to resolution of cGVHD from onset date, d (range)2-155 369 (79-1545) Not collected Not collected 
VariableIBMTR-1 n = 727IBMTR-2 n = 421NMDP n = 378
Designation Training Validation Validation 
Median time to onset cGVHD, d (range) 136 (60-1327) 140 (60-1266) 122 (66-1127)  
Type of onset, n (%)    
 Progressive 157 (22) 132 (31)  73 (19)2-153 
 Interrupted 314 (43) 138 (33) 260 (69)  
 De novo 256 (35) 151 (36)  45 (12)  
Prior acute GVHD, n (%) 470 (65) 270 (64) 333 (88)2-153 
Median platelet count at onset × 109/L (range) 131 (5-999) 114 (0-548)  91 (1-448)2-153 substantial missing data 
Karnofsky performance status at onset, median (range)  80 (20-100)  80 (20-100)  70 (20-100)2-153 substantial missing data 
Total bilirubin > 2 mg/dL at onset2-153, n (%) Not collected  55 (16) substantial missing data  21 (22) substantial missing data 
Chronic GVHD, n (%)    
 Limited 350 (48) 225 (54)  58 (15)2-153 
 Extensive 377 (52) 191 (46) 319 (85)  
Severity at onset, n (%)    
 Mild 381 (52) 215 (51) Not collected 
 Moderate 247 (34) 142 (34)  
 Severe  99 (14)  62 (15)  
New cGVHD grade, n (%)    
 Low risk 365 (50) 256 (61)*  64 (34) 
 Intermediate risk 232 (32)  98 (23)  79 (42) 
 High risk 130 (18)  67 (16)  45 (24)  
 Not able to classify, n    190  
Treatment, %    
 Cyclosporine  60  812-153  932-153 
 Tacrolimus Not collected   4 Not collected 
 Topical steroids  15  18  17  
 Systemic steroids  81  84  952-153 
 ATG/ALS   2   6   6 
 Azathioprine  14  11  14 
 Thalidomide   9   8  12  
Resolution of cGVHD2-155, n (%) 245 (34) Not collected Not collected  
Time to resolution of cGVHD from onset date, d (range)2-155 369 (79-1545) Not collected Not collected 

ATG/ALS indicates antithymocyte globulin/antilymphocyte serum.

*

P ≤ .05 compared with training set.

P ≤ .01 compared with training set.

P ≤ .001 compared with training set.

F2-153

P ≤ .0001 compared with training set.

F2-155

Statistical testing not performed.