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Table 1 Characteristics of neonates and mothers in the study groups (n = 250)

From: Outcome of late preterm newborns in Upper Egypt

Variable

Late preterm (n = 70)

Full term (n = 180)

p

Odds ratio for preterm (95% CI)

Gestational age (weeks)

 Median (IQR)

35.9 (35.0–36.4)

39.0 (38.3–39.9)

< 0.001 (Z)*

 

Sex

 Male

31 (44.3%)

80 (44.4%)

0.982 (χ2)

 

 Female

39 (55.7%)

100 (55.6%)

 

Birth weight

 Mean ± SD

2310.7 ± 361.9

3147.4 ± 608.3

< 0.001 (t)*

 

 SGA

8 (11.4%)

4 (2.2%)

0.002 (χ2)*

 

 LGA

1 (1.4%)

13 (7.2%)

 

Length

 Mean ± SD

45.6 ± 5.6

48.3 ± 1.8

< 0.001 (t)*

 

HC

 Mean ± SD

31.8 ± 1.4

33.8 ± 1.4

< 0.001 (t)*

 

 Microcephaly

3 (4.3%)

1 (0.6%)

0.038 (χ2)*

 

 Macrocephaly

1 (1.4%)

2 (1.1%)

0.843 (χ2)

 

Age at delivery (years)

< 17

4 (5.7%)

1 (0.6%)

0.001 (χ2)*

 

 17–34

51 (72.9%)

164 (91.1%)

 

≥ 35

15 (21.4%)

15 (8.3%)

 

Parity

 Primigravida

17 (24.3%)

57 (31.7%)

0.283 (χ2)

 

 Multigravida

53 (75.7%)

123 (68.3%)

 

Previous preterm delivery

 Yes

10 (14.3%)

11 (6.1%)

0.036 (χ2)*

 

Abortion

 No

46 (65.7%)

119 (66.1%)

0.025 (χ2)*

 

 One time

18 (25.7%)

58 (32.2%)

 

 Two times

6 (8.6%)

3 (1.7%)

 

Antenatal care visits at last pregnancy

 Yes

50 (71.4%)

138 (76.6%)

0.578 (χ2)

 

 Mean ± SD

3.7 ± 1.9

3.9 ± 2.1

0.512 (t)

 

Medical diseases

 DM

6 (8.6%)

18 (10.0%)

0.736 (χ2)

0.84 (0.32–2.22)

 Hypertension

19 (27.1%)

26 (14.4%)

0.012 (χ2)*

2.21 (1.13–4.37)

 UTI

19 (27.1%)

38 (21.1%)

0.309 (χ2)

1.39 (0.74–2.63)

 Fever/rash

6 (8.6%)

7 (3.9%)

0.133 (χ2)

2.32 (0.75–7.16)

 Cardiac

1 (1.4%)

1 (0.6%)

0.123 (χ2)

2.59 (0.16–42.05)

 Respiratory

3 (4.3%)

3 (1.7%)

0.230 (χ2)

2.64 (0.52–13.41)

  1. IQR interquartile range, SD standard deviation, t independent samples t test, UTI urinary tract infection, χ2 chi square test for independence, Z Mann-Whitney test
  2. *Significant p value < 0.05