Table 3.
Respiratory Morbidity and need for respiratory support by gestational age in weeks
| 34 | 35 | 36 | LPI | 37 | 38 | 39 | 40 | 41 | TI | 34-41 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| |
n = 151 |
n = 241 |
n = 458 |
n = 850 |
n = 1149 |
n = 2444 |
n = 3343 |
n = 3729 |
n = 2261 |
n = 12926 |
n = 13776 |
|
CRMa*** |
38 (25.2) |
38 (15.8) |
29 (6.3) |
105 (12.4) |
32 (2.8) |
28 (1.1) |
19 (0.6) |
28 (0.8) |
14 (0.6) |
121 (0.9) |
226 (1.6) |
| TTN*** |
13 (8.6) |
18 (7.5) |
18 (3.9) |
49 (5.8) |
15 (1.3) |
17 (0.7) |
10 (0.3) |
14 (0.4) |
8 (0.4) |
64 (0.5) |
113 (0.8) |
| RDS*** |
17 (11.3) |
16 (6.6) |
7 (1.5) |
40 (4.7) |
9 (0.8) |
3 (0.1) |
2 (0.1) |
2 (0.1) |
1(0.0) |
17 (0.1) |
57 (0.4) |
| Apnea*** |
5 (3.3) |
2 (0.8) |
3 (0.7) |
10 (1.2) |
3 (0.3) |
2 (0.1) |
2 (0.1) |
2 (0.1) |
1 (0.0) |
10 (0.1) |
20 (0.1) |
| Air leak*** |
5 (3.3) |
3 (1.2) |
3 (0.7) |
11 (1.3) |
4 (0.3) |
4 (0.2) |
4 (0.1) |
4 (0.1) |
1 (0.0) |
17 (0.1) |
28 (0.1) |
| PPH*** |
0 (0.0) |
1 (0.4) |
3 (0.7) |
4 (0.5) |
1 (0.1) |
0 (0.0) |
1 (0.0) |
2 (0.1) |
0 (0.0) |
4 (0.0) |
8 (0.2) |
| MAS |
0 (0.0) |
0 (0.0) |
0 (0.0) |
0 (0.0) |
0 (0.0) |
0 (0.0) |
1 (0.0) |
4 (0.1) |
3 (0.1) |
8 (0.1) |
8 (0.05) |
| Respiratory failure** |
3 (2.0) |
2 (0.8) |
0 (0.0) |
5 (0.6) |
4 (0.3) |
6 (0.2) |
1 (0.0) |
4 (0.1) |
1 (0.0) |
16 (0.1) |
21 (0.15) |
| Respiratory support*** |
33 (21.8) |
31 (12.8) |
20 (4.3) |
84 (9.8%) |
23 (2) |
15 (0.6) |
11 (0.3) |
14 (0.4) |
10 (0.4) |
73 (0.56) |
157 (1.14) |
| Mechanical ventilation* |
7 (4.6) |
4 (1.65) |
2 (0.43) |
13 (1.5) |
5 (0.43) |
2 (0.08) |
2 (0.06) |
5 (0.13) |
2 (0.08) |
16 (0.12) |
29 (0.21) |
| Data are expressed as absolute numbers and proportions (%) of observed data in each category. All tests refer to comparisons between late preterm infants (LPI) and term infants (TI). | |||||||||||
a For definition of CRM and abbreviations see text.
***P < .001, using χ2or Fisher test as appropriate.
**P < .01, using χ2or Fisher test as appropriate.
*P < .05, using χ2or Fisher test as appropriate.