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Table 1 Anthropometric and clinical characteristics of mothers and newborns grouped by standardized birth weight

From: Assessment of ten trace elements in umbilical cord blood and maternal blood: association with birth weight

  Total (n = 54) SGA (n = 11) AGA (n = 30) LGA (n = 13) p value
Maternal characteristics
 Age (years)a 30.3 (26.3–34.1) 34.97 (28.01–35.93) 28.9 (26.46–31.33) 30.72 (28.52–32.91) NS
 Vaginal delivery (%)a 35 (64.8) 6 (54.5) 22 (73.3) 7 (53.8) NS
 Nulliparity (%)a 23 (42.6) 6 (54.5) 13 (43.3) 4 (30.8) NS
 Anemia (%)a 10 (18.5) 1 (11.1) 5 (18.5) 4 (30.8) NS
 Smoking (%)a 12 (22.2) 5 (55.6) 6 (7.6) 1 (2.3) <0.05
Infant characteristics
Gestational age (weeks)b 39.5 (38.5–40.5) 39.5 (38.5–39.5) 39.5 (37.5–40.5) 40.5 (30.5–40.5) NS
 Sex (% male)a 29 (53.7) 3 (27.3) 20 (66.7) 6 (46.2) <0.05
 Birth WEIGHT (g)b 3670 (2720–3950) 2450 (2305–2680) 3620 (2747.5–3785) 4275 (3955–4400) <0.01
 Length (cm)b 50 (47–51.5) 46.25 (45–46.5) 50 (48–51.25) 51.75 (50.88–52.25) <0.01
 Head circumference (cm)b 34 (33–36) 32.50 (31–33.5) 34.5 (33–35.88) 36.25 (33.75–37) <0.01
  1. p value <0.05 statistical significance of the differences among groups
  2. NS non-significant
  3. aFisher’s exact tests; absolute frequency and percentage
  4. bKruskal–Wallis tests; median and interquartile range (IQR)
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