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Table 2 Intra-observer error (observer 2) 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 ± 1.2 90 90% 10    1 9   
Ulna 16.0 ± 1.1 16.0 ± 1.1 94 94% 6     6   
Capitate 12.9 ± 0.3 13.0 ± 1.2 96 96% 4    4    
Hamate 12.9 ± 0.5 13.0 ± 0.4 96 96% 4    4    
Triquetral 13.0 ± 0.2 13.0 ± 0.1 96 96% 4    4    
Pisiform 100 100%        
Lunate 12.9 ± 0.4 13.0 ± 0.2 91 91% 9    9    
Scaphoid 12.7 ± 0.6 12.8 ± 0.5 93 93% 7    7    
Trapezium 12.8 ± 0.6 12.8 ± 0.5 96 96% 4   1 3    
Trapezoid 12.9 ± 0.3 13.0 ± 0.1 96 96% 4    4    
Adductor Sesamoid 100 100%        
Metacarpal I 14.9 ± 0.4 14.9 ± 0.4 92 92% 8    1 7   
Metacarpal II 14.7 ± 0.6 14.6 ± 0.4 91 91% 9    2 7   
Metacarpal III 14.6 ± 0.6 14.6 ± 0.6 95 95% 5    3 2   
Metacarpal IV 14.6 ± 0.6 14.6 ± 0.6 96 96% 4    4    
Metacarpal V 14.6 ± 0.7 14.6 ± 0.6 94 94% 6    3 3   
Proximal phalange I 14.4 ± 0.7 14.4 ± 0.6 88 88% 12    7 5   
Proximal phalange II 14.8 ± 0.6 14.8 ± 0.6 98 98% 2    1 1   
Proximal phalange III 14.7 ± 0.7 14.8 ± 0.6 98 98% 2    2    
Proximal phalange IV 14.7 ± 0.7 14.8 ± 0.6 96 96% 4    4    
Proximal phalange V 14.7 ± 0.6 14.8 ± 0.6 96 96% 4    4    
Medial phalange II 14.8 ± 0.6 14.8 ± 0.6 98 98% 2     2   
Medial phalange III 14.8 ± 0.6 14.7 ± 0.6 96 96% 4     4   
Medial phalange IV 14.8 ± 0.5 14.8 ± 0.5 94 94% 6    3 3   
Medial phalange V 14.8 ± 0.5 14.8 ± 0.5 98 98% 2    1 1   
Distal phalange I 14.3 ± 0.5 14.3 ± 0.6 94 94% 6    6    
Distal phalange II 14.3 ± 0.5 14.3 ± 0.5 100 100%        
Distal phalange III 14.3 ± 0.5 14.3 ± 0.5 93 93% 7    4 3   
Distal phalange IV 14.3 ± 0.5 14.3 ± 0.6 96 96% 4    4    
Distal phalange V 14.3 ± 0.5 14.3 ± 0.6 95 95% 5    3 2   
Total disagreements    2856   144   1 88 55   
%    95.2%   4.8%   1% 61.1% 23.3%   
  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