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Table 2 Comparison of the impact of disease type, age and sex on the mortality

From: Characteristics of in-hospital mortality of congenital heart disease (CHD) after surgical treatment in children from 2005 to 2017: a single-center experience

Different classifications Death
(N)
Alive
(N)
Mortality
(%)
z-test*
(Bonferroni method)
Chi-Square
and P value
Disease classification Left to right shunt CHD 82 11,731 0.69 a χ2 = 520.3
P < 0.05
Left obstructive lesion CHD 47 999 4.49 b
Right to left shunt CHD 146 4018 3.51 b
Complex mixed defect CHD 165 1748 8.63 c
Periods Neonatal period 129 931 12.17 a χ2 = 529.3
P < 0.05
Infant period 218 8229 2.58 b
Toddler age 47 3993 1.16 c
Preschool age 30 3162 0.94 c
School age and adolescence 20 2355 0.84 c
Male or female Male 325 11,426 2.77 a χ2 = 26.4
P < 0.05
Female 119 7244 1.62 b
  1. * Each letter denotes a subset of Group categories whose column proportions do not differ significantly from each other at the .05 level