|  | Age | Cobb degrees | Risk of Progression |
---|
Author | Year | Average | Average | Estimated |
---|
Weiss | 2003§ | 10 | 21 | 90% |
Ducongé | 2002 | 10, 1 | 15,6 | 50% |
Mollon | 1986 | 10,8 | 16 | 50% |
Klisic | 1985 | 11 | 14 | 35% |
Ferraro | 1998 | 11,6 | 14,9 | 35% |
Rigo | 1991 | 12 | 19,5 | 35% |
Negrini | 2006a | 12,4 | 15,1 | 15% |
Weiss | 1997 | 12,7 | 27 | 60% |
Weiss | 2003$ | 13 | 29,5 | 60% |
Mooney | 2000 | 13,1 | 33,5 | 85% |
Negrini | 2006b | 13,4 | 30,9 | 60% |
Stone | 1979 | 13,5 | 10 | 0% |
den Boer | 1999 | 13,6 | 26 | 27% |
McIntire | 2006 | 14 | 29 | 20% |
Otman | 2005 | 14, 1 | 26,1 | 5%* |
Mamyama | 2002 | 16,3 | 31,5 | 25%* |
Maruyama | 2003a | 16,3 | 33,3 | 25%* |
Weiss | 1992 | 21,6 | 43 | ** |
- As can be seen, only 7 out of 19 samples published at average had a risk of progression exceeding 40% and by this had an indication for treatment (38%). One study had a pre- post design and should be excluded**. Three other papers were with a patient sample that was (nearly) outgrown and would not need any treatment*. The studies by Weiss 2003, Mollon and Rodot 1986 and Ducongé 2002 had a wide range of materials and included also many prepubertal patients not yet at risk. The patient sample from Weiss, Weiss and Petermann (2003) was subdivided into an immature (§) and a more mature sample ($)
- (* Patients nearly outgrown/outgrown; ** Patients outgrown/pre-/post intervention study)