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Table 2 Characteristics of infants 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 (18)

ID (52)

DD (40)

 

Gestational age (weeks)

36 (27-40)

35 (28-40)

36(29-40)

0.680a

Birth weight (g)

2780 (960-4150)

2705 (1065-3650)

2755 (1170-3820)

0.756a

Male gender

9 (50.0%)

28 (53.8%)

25 (62.5%)

0.097b

Duration of mechanical ventilation (days)

0 (0-59)

2 (0-21)

0 (0-8)

0.167a

At the time of measurement

Postnatal age (days)

8.5 (1-107)

9.5 (1-62)

8 (1-54)

0.686a

Weight (kg)

2660 (1850-4050)

2620 (1850-3680)

2657 (1880-3540)

0.618a

cACE activity (U/L)

39.3 (24.3-72.3)

41.1 (16.7-71.9)

51.1 (23.9-89.0)

0.028a

Pimax (cmH2O)

71.3 (49.3-88.7)

61.1 (36.9-90.8)

66.1 (42.4-91.8)

0.09a

Pimax/weight (cmH2O/kg)

25.3 (17.0-37.6)

23.5 (14.5-42.3)

24.5 (14.9-47.1)

0.267a

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