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Table 6 Characteristics of infants that never required respiratory support in relation to ACE genotypes

From: Association of circulating angiotensin converting enzyme activity with respiratory muscle function in infants

    

p value

ACE genotypes (n)

II (10)

ID (25)

DD (25)

 

Gestational age(weeks)

36 (32-40)

37(30-40)

37(31-40)

0.992a

Birth weight (g)

2780 (1350-3650)

2820 (1500-3650)

2850 (1260-3820)

0.924a

Male gender

6 (60.0%)

14 (56.0%)

16 (64.0%)

0.075b

At the time of measurement

Postnatal age (days)

7 (1-26)

6 (1-30)

8 (1-31)

0.834a

Weight (kg)

2675 (1950-3550)

2680 (1950-3680)

2830 (1880-3540)

0.951a

cACE activity (U/L)

40.2 (24.3-52.8)

41.4 (16.7-66.8)

51.8 (27.4-89.0)

0.046a

Pimax (cmH2O)

73.8 (49.3-88.7)

61.1 (36.9-88.4)

68.1 (47.4-91.8)

0.182a

Pimax/weight (cmH2O/kg)

24.9 (17.0-37.6)

22.5 (14.5-42.3)

24.3 (14.9-47.1)

0.347a

  1. Data are demonstrated as n (%) or median (range).
  2. aKruskal-Wallis testbCramer's V test