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Table 1 The cluster assignment based on the dissimilarity matrix. The minimum Euclidian distance for each patient, determined the type. For example patient 1 was assigned to Type 1 as the calculated Euclidean distance between the Type 1 and Patient 1 was smaller than the distance between the patient 1 and other Types. Four patients were excluded as the dissimilarity between these cases and the five types exceeded the Euclidian distance between the five types as shown in the shaded section of the table

From: Three-dimensional classification of the Lenke 1 adolescent idiopathic scoliosis using coronal and lateral spinal radiographs

Patient ID Type 1 Type 2 Type 3 Type 4 Type 5  
Type 1 0      
Type 2 444.5 0     
Type 3 549.5 350.9 0    
Type 4 365.6 279.3 312.7 0   
Type 5 514.3 572.2 448.7 301.7 0  
Patients ID Type 1 Type 2 Type 3 Type 4 Type 5 Assigned cluster
1 318.3 632.9 630.8 596.7 930.6 1
2 422.8 221.5 690.5 425.1 557.2 2
3 614.6 336.8 617.8 379.8 212.9 5
4 718.8 576.2 545.7 476.1 236.4 5
5 960.2 825.0 658.1 675.5 393.0 5
6 150.1 321.5 557.5 372.3 673.7 1
7 300.2 238.9 357.7 83.1 382.1 4
8 225.4 609.2 425.4 395.7 628.2 1
9 278.6 406.5 238.0 205.0 487.3 4
10 916.5 868.2 717.8 980.9 700.9 X
11 549.2 392.6 431.9 287.0 180.8 5
12 180.5 422.9 386.2 323.1 628.7 1
13 282.5 306.8 656.1 422.5 704.5 1
14 636.4 808.0 537.8 263.1 730.8 4
15 854.5 884.2 790.3 905.7 889.7 X
16 693.5 678.0 432.6 339.6 478.0 4
17 348.2 270.6 445.7 215.8 421.5 4
18 575.1 700.1 239.9 426.1 188.6 5
19 511.2 211.2 656.7 366.4 445.4 2
20 287.0 210.2 396.1 136.3 421.0 4
21 431.4 630.9 150.8 386.9 627.4 3
22 675.8 392.2 644.7 427.7 226.9 5
23 952.1 590.6 778.2 1143.1 693.5 X
24 219.0 337.1 551.8 364.1 658.5 1
25 388.5 508.5 227.6 262.8 545.2 3
26 278.1 608.6 490.6 513.7 825.3 1
27 407.9 167.1 659.6 392.8 512.9 2
28 235.8 559.6 454.4 463.0 775.7 1
29 311.7 166.8 544.8 292.2 468.0 2
30 680.3 756.2 734.2 811.4 703.1 X
31 262.9 190.3 601.5 360.4 582.3 2
32 331.0 117.2 572.0 307.1 478.1 2
33 336.9 280.3 428.2 204.9 426.9 4
34 283.3 204.8 385.6 103.6 403.3 4
35 327.1 215.5 440.6 164.1 429.7 4
36 495.6 471.4 255.7 230.2 339.9 4
37 333.3 220.4 536.5 328.8 591.9 2
38 446.7 550.4 121.3 277.4 510.3 3
39 370.6 361.5 232.7 110.4 341.9 4
40 532.8 622.5 143.1 360.8 511.6 3