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Table 2 Perinatal factors and palatal groove. Association of perinatal variables and occurrence of palatal groove in preterm infants (n = 74)

From: Associated factors and persistence of palatal groove in preterm infants: a cohort study

Variables

Palatal groove

P-value

Yes

n = 19

No

n = 55

Female sex, n (%)

13 (68.4 %)

22 (40.0 %)

0.038a

Gestational age, n (%)

  

0.354b

 Extremely preterm (< 28 weeks)

5 (26.3 %)

7 (12.7 %)

 

 Very preterm (28 to < 32 weeks)

7 (36.8 %)

21 (38.2 %)

 

 Preterm (32 to < 37 weeks)

7 (36.8 %)

27 (49.1 %)

 

Infant’s weight at birth, n (%)

  

0.094b

 Very low (< 1500 grams)

13 (68.4 %)

22 (40.0 %)

 

 Low (1500 to 2499 grams)

4 (21.1 %)

25 (45.5 %)

 

 Normal (≥ 2500 grams)

2 (10.5 %)

8 (14.5 %)

 

Infant’s age (months) at the first dental consultation, median (interquartile range)

3.0 (3.0)

3.0 (2.0)

0.286c

Admitted to NICU, n (%)

17 (89.5 %)

40 (72.7 %)

0.207a

For how long (days), median (interquartile range)d

37.0 (51.0)

20.0 (44.0)

0.005c

Neonate was intubated, n (%)

16 (84.2 %)

30 (54.5 %)

0.028a

For how long (days), median (interquartile range)d

5.0 (23.0)

1.0 (5.0)

0.005c

Use of orogastric tube, n (%)

19 (100.0 %)

45 (81.8 %)

0.056a

For how long (days), median (interquartile range)d

33.0 (40.0)

15.0 (36.0)

0.019c

Exclusive breastfeeding, n (%)

1 (5.3 %)

17 (30.9 %)

0.030a

Non-nutritive sucking, n (%)

13 (68.4 %)

33 (60.0 %)

0.591

  1. aChi-square, Fischer exact test
  2. bPearson chi-square
  3. cMann-Whitney
  4. dIncluding those cases that were not exposed to the factors – NICU, intubation, orogastric tube