highly significantP < 0.001
Chi-square testing of the association between month and umbilical scar status was highly significant (χ 2 , df = 34, P < 0.001) (Table 2 ).
Chi-square testing of the association between month and umbilical scar status was highly significant (χ 2 , df = 34, P < 0.001) (Table 2 ).