Table 1.

Clinical and demographic characteristics

	Clinical and demographic characteristics
Patients	N = 402
Age (years)	M→ 14,95 years old(range 4,9–27,64) F→ 13,44 years old(range 5,71–26.73)
Sex, N (%)	Male 334 (83,08%) Females 68 (17%)
Simmetry, N (%)	→M 110 (27,36%) 20 (4,97%)→F
Asimmetry, N (%)	224 (55,72%)→M 48 (11,94%)→F
Comorbidities	Flaring ribs →11(2.74%) Breast asymmetry → 4 (0.99%) Cardiac dislocation → 9 (2.24%) Mitral valve prolapse → 3 (0.75%) right incomplete bundle branch block → 5 (1.24%) Delay of right intraventricular conduction → 1 (0.25%) High blood pressure → 1 (0.25%) Poland syndrome → 1 (0.25%) Noonan syndrome → 2 (0.50%) suspected Marfan Syndrome →1 (0.25%) Sternal cleft → 1 (0.25%) Diaphragmatic eventratio → 1 (0.25%) Excavatum-carenatum → 1 (0.25%) Nephrotic syndrome → 1 (0.25%) Megalencephaly → 1 (0.25%) Lung disease → 2 (0.50%) Relapse in patients already operated with Nuss technique → 2 (0.50%) Previous cardiac surgery with development of sternal adhesions → 1(0.25%)