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Table 1 The association between the occurrence of tonsillar ectopia and different categorical variables.

From: Tonsillar ectopia in idiopathic scoliosis: does it play a role in the pathogenesis and prognosis or is it only an incidental finding?

Tonsillar ectopia
  Yes No P-value
IS 29 (37%) 50 (63%)  
Control 10 (13%) 66 (87%) < 0.001
Odds Ratio 3.8 (95% CI 1.7-8.5)
Gender
  Male Female  
Ectopia 16 (55%) 23 (45%)  
No ectopia 20 (40%) 30 (60%) 0.54
Neurological deficit
  Yes No  
Ectopia 6 (21%) 23 (79%)  
No ectopia 5 (10%) 45 (90%) 0.31
Pain
  Yes No  
Ectopia 10 (34%) 19 (66%)  
No ectopia 16 (32%) 34 (68%) 0.82
Rapid progression of scoliosis
  Yes No  
Ectopia 4 (14%) 25 (86%)  
No ectopia 9 (18%) 41 (82%) 0.76
Atypical scoliosis
  Yes No  
Ectopia 1 (3%) 28 (97%)  
No ectopia 7 (14%) 43 (86%) 0.24
Occurrence of tonsillar ectopia among patients with IS only vs those with IS and other associated abnormalities
  Yes No  
Ectopia 19 (37%) 10 (36%)  
No ectopia 32 (63%) 18 (64%) 1.0