Peri-operative data on the nuss procedure in children with pectus excavatum: independent survey of the first 20 years' data

Table 2 The series merged, 20 years of Nuss operations in children 1987–2006

Reference number	Patients operated	Type of study	Number of centres	Comment
1	329	Retrospective	One	Series update on ref. 24
3	21	Comparative	One
4	52	Retrospective	One
5	335	Retrospective	One	Encompasses ref. 19
6	53	Retrospective	One
10	22	Retrospective	One
11	40	Retrospective	Not reported
12	172	Retrospective	Eight
13	31	Retrospective	One
15	20	Retrospective	One	Modified technique
16	36	Comparative	One
23	27	Retrospective	One	Subgroup of all-age cohort
8*	107	Comparative	One	Similar data to ref. 9
9*	107	Retrospective	Not reported	Similar data to ref. 8
14	80	Comparative	One
17**	35	Comparative	One	Same centre as ref. 18
18**	21	Retrospective	One	Same centre as ref. 17
22	461	Retrospective	One
Total	1949

ISSN: 1749-8090