Table 2.

Evidence of respiratory distress among preterm (<33 weeks) or very low birth weight (<1500 g) infants

Sign of respiratory distress (N = 136)	Infants with symptoms
	n	%
SpO2 <90 %	69	50.7
Grunting (N = 134)	17	12.7
Chest retraction (N = 134)	38	28.4
Nasal flaring (N = 134)	15	11.2
Respiration rate <30 or >70	24	17.7
At least one sign of respiratory distress (N = 135)	83	61.5