Table 3 Perinatal status, morbidity and mortality rates of all hospitalized preterm infants in Huai’an
From: A birth population-based survey of preterm morbidity and mortality by gestational age
| Â | HWCH | Non-HWCH | Whole | ||
|---|---|---|---|---|---|
Inborn | Out-born | Total | hospitals | region | |
Hospitalization | 802 | 223 | 1025 | 916 | 1941 |
Intensive care | 184 (22.9) | 54 (24.2) | 238 (23.2) | 446 (48.7)### | 684 (35.2) |
Critical care1 | 283 (35.3) | 92 (41.3) | 375 (36.6) | 74 (8.1)### | 449 (23.1) |
Length of stay, days | 14 [10, 19] | 14 [9, 21] | 14 [10, 20] | 8 [5, 13]### | 11 [7, 17] |
Costs, ×1000 CNY | 13 [9, 20] | 13 [9, 23] | 13 [9, 20] | 7 [4, 12]### | 10 [6, 17] |
Cesarean delivery | 509 (63.5) | 104 (46.6)*** | 613 (59.8) | 556 (60.7) | 1169 (60.2) |
Male | 472 (58.9) | 127 (57.0) | 599 (58.4) | 496 (54.1) | 1095 (56.4) |
GA, weeks | 33.7Â +Â 2.4 | 33.6Â +Â 2.5 | 33.7Â +Â 2.4 | 34.1Â +Â 2.1### | 33.9Â +Â 2.3 |
25–27 | 21 (2.6) | 7 (3.1) | 28 (2.7) | 12 (1.3)# | 40 (2.1) |
28–31 | 109 (13.6) | 34 (15.2) | 143 (14.0) | 98 (10.7) | 241 (12.4) |
32–33 | 160 (20.0) | 44 (19.7) | 204 (19.9) | 155 (16.9) | 359 (18.5) |
34–36 | 512 (63.8) | 138 (61.9) | 650 (63.4) | 651 (71.1)## | 1301 (67.0) |
BW, g | 2280Â +Â 610 | 2270Â +Â 625 | 2278Â +Â 614 | 2376Â +Â 636## | 2324Â +Â 626 |
<  1000 | 12 (1.5) | 1 (0.4) | 13 (1.3) | 7 (0.8) | 20 (1.0) |
1000-1499 | 72 (9.0) | 27 (12.1) | 99 (9.7) | 73 (8.0) | 172 (8.9) |
1500-2499 | 403 (50.2) | 110 (49.3) | 513 (50.0) | 422 (46.1) | 935 (48.2) |
>  2500 | 315 (39.3) | 85 (38.1) | 400 (39.0) | 414 (45.2)## | 814 (41.9) |
Multiple births | 214 (26.7) | 35 (15.7)** | 249 (24.3) | 140 (15.0)### | 389 (20.0) |
SGA | 35 (4.4) | 12 (5.4) | 47 (4.6) | 50 (5.5) | 97 (5.0) |
AF contamination | 39 (4.9) | 15 (6.7) | 54 (5.3) | 66 (7.2) | 120 (6.2) |
Grade II | 5 (0.6) | 4 (1.8) | 9 (0.9) | 17 (1.9) | 26 (1.3) |
Grade III | 24 (3.0) | 9 (4.0) | 33 (3.2) | 26 (2.8) | 59 (3.0) |
Apgar 1-min < 7 | 375 (46.8) | 42 (18.8)*** | 417 (40.7) | 156 (17.0)### | 573 (29.5) |
Apgar 5-min < 7 | 91 (11.3) | 24 (10.8) | 115 (11.2) | 52 (5.7)### | 167 (8.6) |
Birth defects | 26 (3.1) | 20 (9.0)*** | 45 (4.4) | 109 (11.9)### | 154 (7.9) |
Admitted within 24 h | 711 (88.7) | 145 (65.0)*** | 856 (83.5) | 712 (77.7)## | 1568 (80.8) |
IVH | 99 (12.3) | 24 (10.8) | 123 (12.0) | 90 (9.8) | 213 (11.0) |
RDS | 119 (14.8) | 38 (17.0) | 157 (15.3) | 116 (12.7) | 273 (14.1) |
Pneumonia / sepsis | 367 (45.8) | 116 (52.0) | 483 (47.1) | 294 (32.1)### | 777 (40.0) |
Hypoglycemia | 148 (18.5) | 31 (13.9) | 179 (17.5) | 30 (3.3)### | 209 (10.8) |
PDA | 11 (1.4) | 4 (1.8) | 15 (1.5) | 4 (0.4)# | 19 (1.0) |
Hyperbilirubinemia | 690 (86.0) | 118 (52.9)*** | 808 (78.8) | 338 (36.9)### | 1146 (59.0) |
Air leaking | 3 (0.4) | 4 (1.8)* | 7 (0.7) | 3 (0.3) | 10 (0.5) |
Surfactant | 103 (12.8) | 28 (12.6) | 131 (12.8) | 86 (9.4)# | 217 (11.2) |
NIV / MV | 309 (38.5) | 95 (42.6) | 404 (39.4) | 370 (40.4) | 774 (39.9) |
BPD | 32 (4.0) | 8 (3.6) | 40 (3.9) | 13 (1.4)## | 53 (2.7) |
NEC | 21 (2.6) | 7 (3.1) | 28 (2.7) | 10 (1.1)## | 38 (2.0) |
ROP | 6 (0.7) | 0* | 6 (0.6) | 0# | 6 (0.3) |
Encephalopathy | 33 (4.1) | 10 (4.5) | 43 (4.2) | 15 (1.6)## | 58 (3.0) |
In-hospital deaths | 33 (4.1) | 23 (10.3)*** | 56 (5.5) | 31 (3.4)# | 87 (4.5) |
By postnatal days | |||||
 0–6 | 20 (2.5) | 15 (6.7)** | 35 (3.4) | 22 (2.4) | 57 (2.9) |
 7–27 | 10 (1.2) | 5 (2.2) | 15 (1.5) | 8 (0.9)# | 23 (1.2) |
  > 28 | 3 (0.4) | 3 (1.3) | 6 (0.6) | 1 (0.1) | 7 (0.4) |
By GA weeks | |||||
 25–27 | 8 (1.0) | 5 (2.2) | 13 (1.3) | 9 (1.0) | 22 (1.1) |
 28–31 | 15 (1.9) | 10 (4.5)* | 25 (2.4) | 13 (1.4) | 38 (2.0) |
 32–33 | 6 (0.7) | 3 (1.3) | 9 (0.9) | 3 (0.3) | 12 (0.6) |
 34–36 | 4 (0.5) | 5 (2.2)* | 9 (0.9) | 6 (0.7) | 15 (0.8) |