|
Table 2: Main characteristics of the study population. |
|||||
|
|
BPD Severity |
||||
|
SD |
Mild n (%) |
Moderate n (%) |
Severe n (%) |
p |
|
|
Variables |
3 |
71 (18.39) |
182 (47.15) |
130 (33.68) |
NA |
|
Maternal variables |
|||||
|
Sex Female Male |
1 |
26 (36.62) 44 (61.97) |
79 (43.41) 103 (56.59) |
55 (42.31) 75 (57.69) |
0.153 |
|
Gestational age Median and range (weeks) Range |
|
31.0 29-35 |
31.4 28-34 |
31.2 28-34 |
0.861 |
|
Birth weight Median (g) Range |
|
1,500 1,030-2,200 |
1,300 1,000-2,100 |
1,305 1,050-2,050 |
0.597 |
|
Days with O2 Median (days) Range |
|
40 30-57 |
107 63-210 |
180 96-370 |
0.001* |
|
Mechanical ventilation days Median (days) Range |
36 |
12 6-22 |
20 10-30 |
54 49-59 |
0.001* |
|
Surfactant Yes |
|
17 (23.94) |
49 (26.92) |
43 (33.08) |
NC |
|
Egress with O2 Yes |
|
18 (25.35) |
118 (64.84) |
93 (71.54) |
0.000* |
|
Prenatal history |
|||||
|
Chorioamnioitis Yes |
|
0 (0) |
3 (1.65) |
2 (1.54) |
0.717 |
|
Intraventricular hemorrhage Yes |
|
9 (12.68) |
31 (17.03) |
27 (20.77) |
0.344 |
|
Persistent ductus arteriosus Yes |
|
10 (14.08) |
33 (18.13) |
33 (25.38) |
0.115 |
|
Enterocolitis Yes |
|
4 (5.63) |
20 (10.99) |
13 (10.00) |
0.466 |
|
Perinatal asphyxia Yes |
|
17 (23.94) |
44 (24.18) |
37 (28.46) |
0.577 |
|
Malnutrition at birth Yes |
|
66 (92.96) |
165 (90.66) |
122 (93.85) |
0.285 |
|
Maternal background |
|
|
|
|
|
|
Maternal age (years) < 20 20-39 > 40 |
|
10 (14.08) 58 (81.69) 3 (4.23) |
28 (15.38) 141 (77.47) 13 (7.14) |
13 (10.00) 106 (81.54) 11 (8.46) |
0.574 |
|
Maternal schooling Primary High school Technical University Does not read or write |
|
31 (43.66) 28 (39.44) 2 (3) 7 (10) 3 (4) |
94 (51.65) 68 (37.36) 4 (2) 16 (9) 0.00 (0.00) |
57 (43.85) 52 (40.00) 4 (3.08) 14 (10.8) 3 (2.31) |
0.39 |
|
Cesarean section Yes |
|
54 (76.06) |
133 (73.08) |
95 (73.08) |
0.876 |
|
Multiple pregnancy Yes |
|
3 (4.23) |
5 (2.75) |
5 (3.85) |
0.807 |
|
Premature rupture of membranes Yes |
|
19 (26.76) |
44 (24.18) |
40 (30.77) |
0.432 |
|
Gestational hypertension Yes |
|
12 (16.9) |
29 (15.93) |
19 (14.62) |
0.905 |
|
Family and environmental background |
|||||
|
Passive smoking Yes |
|
10 (14.08) |
26 (14.29) |
12 (9.23) |
0.493 |
|
Zoonoses Yes |
|
22 (30.99) |
48 (26.37) |
26 (20.00) |
0.338 |
|
Wood smoke Yes |
|
4 (5.63) |
4 (2.2) |
4 (3.08) |
0.393 |
|
Family history of asthma Yes |
|
5 (7.04) |
7 (3.85) |
9 (6.92) |
0.462 |
|
* Statistically significant. BPD = bronchopulmonary dysplasia. |
|||||