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Table 1 Intra-observer error (observer 1) on SAs estimates among female adolescent soccer players (n = 100)

From: Reproducibility and inter-observer agreement of Greulich-Pyle protocol to estimate skeletal age among female adolescent soccer players

  Time-moment 1
(TM1)
Time-moment 2
(TM2)
Agreement Disagreement
n % n magnitude of discrepanciesa
-3 −2 −1 + 1 + 2 + 3
Radius 15.6 ± 1.2 15.5 ± 1.3 82 82% 18    5 12 1  
Ulna 16.1 ± 1.1 16.1 ± 1.1 86 86% 14    8 6   
Capitate 12.9 ± 0.3 12.9 ± 0.4 93 93% 7    4 3   
Hamate 12.8 ± 0.6 13.0 ± 0.2 92 92% 8 3 1 4    
Triquetral 12.8 ± 0.6 12.9 ± 0.5 90 90% 10 1 3 2 4   
Pisiform 100 100%        
Lunate 12.9 ± 0.4 12.9 ± 0.4 96 96% 4    1 2 1  
Scaphoid 12.9 ± 0.4 12.8 ± 0.5 91 91% 9    1 6 2  
Trapezium 12.8 ± 0.6 12.8 ± 0.6 90 90% 10 1 1   1 7  
Trapezoid 12.9 ± 0.4 12.9 ± 0.4 95 95% 5 1   1 2 1  
Adductor Sesamoid 100 100%        
Metacarpal I 14.9 ± 0.5 14.9 ± 0.5 94 94% 6    1 5   
Metacarpal II 14.7 ± 0.6 14.6 ± 0.6 91 91% 9    5 4   
Metacarpal III 14.7 ± 0.6 14.7 ± 0.6 92 92% 8    2 6   
Metacarpal IV 14.8 ± 0.5 14.7 ± 0.6 90 90% 10     10   
Metacarpal V 14.7 ± 0.5 14.7 ± 0.6 89 89% 11    3 6 2  
Proximal phalange I 14.4 ± 0.6 14.4 ± 0.6 91 91% 9   1 4 4   
Proximal phalange II 14.8 ± 0.5 14.7 ± 0.6 89 89% 11    1 10   
Proximal phalange III 14.8 ± 0.5 14.7 ± 0.6 91 91% 9     9   
Proximal phalange IV 14.8 ± 0.5 14.8 ± 0.6 89 89% 11   1 1 9   
Proximal phalange V 14.7 ± 0.6 14.8 ± 0.6 90 90% 10    8 2   
Medial phalange II 14.9 ± 0.4 14.8 ± 0.6 90 90% 10    1 8 1  
Medial phalange III 14.9 ± 0.5 14.8 ± 0.6 91 91% 9    1 7 1  
Medial phalange IV 14.9 ± 0.5 14.8 ± 0.5 91 91% 9    1 8   
Medial phalange V 14.8 ± 0.5 14.8 ± 0.6 92 92% 8    4 4   
Distal phalange I 14.3 ± 0.6 14.3 ± 0.6 97 97% 3    2 1   
Distal phalange II 14.3 ± 0.6 14.3 ± 0.6 95 95% 5    2 3   
Distal phalange III 14.3 ± 0.6 14.3 ± 0.6 96 96% 4    1 3   
Distal phalange IV 14.3 ± 0.6 14.3 ± 0.6 96 96% 4    1 3   
Distal phalange V 14.3 ± 0.5 14.3 ± 0.6 99 99% 1     1   
Total disagreements    2768   232 6 7 64 139 16 0
%    92.3%   7.7% 2.6% 3.1% 27.6% 59.9% 6.9% 0.0
  1. asigns refer to TM1 minus TM2 and numbers corresponds to plates from the collection of photographs representing the sequence of skeletal maturation in atlas