Relationship between neonatal respiratory distress syndrome pulmonary ultrasonography and respiratory distress score, oxygenation index, and chest radiography grading

Table 4 Comparison of the respiratory distress syndrome neonatal ultrasonography score, respiratory distress score, oxygenation index, and chest X-ray grade before and after treatment

Items		Before treatment, n = 73	After treatment, n = 73	t/Z	P value
Ultrasonography score (points)		26.74 ± 7.34	15.12 ± 6.11	17.324	< 0.001
Respiratory distress score (points)		7.67 ± 1.23	3.93 ± 1.25	47.887	< 0.001
Oxygenation index		7.92 ± 2.35	5.84 ± 2.13	9.543	< 0.001
Chest X-ray grade	0	0 (0.00)	32 (43.84)	−7.460	< 0.001
	I	2 (2.74)	24 (32.88)
	II	20 (27.40)	16 (21.92)
	III	22 (30.14)	1 (1.37)
	IV	29 (39.73)	0 (0.00)

Data are mean ± standard deviation or n (%).