Table 3.

The risk of developmental defect of enamel in incisor teeth according to various parameters.

Variable		DDE	Healthy teeth	OR	CI 95%	P value
Surfactant	Yes (%)/No (%)	14 (58)/3 (11)	10 (42)/24 (89)	11.2	2.6–47.9	0.00
RDS	Yes (%)/No (%)	14 (54)/3 (12)	12 (46)/22 (88)	8.55	2.0–13.3	0.00
Intubation duration (days)	Median (range)	3 (0–61)	0 (0–22)			0.03
	Mean ± S.D	6.82 ± 14.23	2.5 ± 4.66
Noninvasive ventilation (days)	Median (range)	12 (0–91)	3.5 (0–68)			0.02
	Mean ± S.D	23.29 ± 27.53	9.76 ± 14.22

DDE, developmental defect of enamel; RDS, respiratory distress syndrome.