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Table 1 Clinical characteristics

From: Administration of zinc to preterm infants with hypozincemia does not reduce serum copper concentrations in most cases: a single-center retrospective observational study

 

n

Median

Range

(Interquartile range)

Sex

 Male

33 (52.4%)

  

 Female

30 (47.6%)

  

GA (week)

 

32.0

25.0–36.1 (30.3–33.9)

Birth weight (g)

 

1556.0

624.0–2550.0 (1210.5–1782.5)

Dose (mg/kg/day)

 

2.1

1.0–3.8 (1.8–2.5)

Administration period (day)

 

12.0

4.0–14.0 (10.0–13.0)

At the start of administration

 PNA (day)

 

26.0

9.0–72.0 (15.0–31.5)

 PMA (week)

 

35.6

31.4–39.6 (34.6–37.0)

 Body weight (g)

 

1948.0

866.0–2686.0 (1752.0–2212.5)

 Serum zinc concentration (μg/dL)

 

58.0

40.0–69.0 (54.5–64.0)

 Serum copper concentration (μg/dL)

 

42.0

26.0–86.0 (32.0–47.5)

  1. GA, gestational age; PNA, postnatal age; PMA, postmenstrual age