Univariate analysis show that: gestational age <37 weeks: OR 1.71 [1.13 - 2.59] p= 0.01, surgical diseases: OR 1.62 [1.06 - 2.49] p= 0.025; shock: OR OR 106.87 [42.31 - 269.91] p= 0, 000; sleroderma at admission: OR 4.66 [1.92 - 11.34] p= 0.001, newborns with address in the provinces: OR 1.93 [1.05 - 3.55] p= 0.032.