Table 1. clinical score.

	0	1 = mild	2 = marked
Intercostals retraction
Xiphoid retraction
Chest movement synchronization
Nasal flaring
Score I =
	0	1	2
Wheezing	None	E	E+I or no more sounds
I/E ratio	I>E	I = E	I<E
Reactivity	Good	Tired	Poor
Feeding	Unchanged	enteral	parenteral
Lung hyperinflation Chest X-ray	No	Yes with CTR≥0.5	Yes with CTR<0.5
Score II =
final score = Scores I+II

E = expiratory; I = inspiratory; CTR = cardiothoracic ratio.

^*Chest X-ray was assessed once at the admission.