Table 2 Neonatal characteristics by gestational age in weeks
From: Short-term respiratory outcomes in late preterm infants
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 | |
Birth weight *** | |||||||||||
Mean (SD), g | 2128(406) | 2323(431) | 2592(429) | 2433(463) | 2887(455) | 3115(414) | 3269(385) | 3401(392) | 3545(391) | 3292(442) | 3289 (489) |
SGA *** | 17(11.3) | 40(16.6) | 69(15.1) | 126(14.8) | 163(14.2) | 257(10.6) | 298(8.9) | 328(8.8) | 156(6.9) | 1202(9.3) | 1328(9.6) |
Gender | |||||||||||
Male | 73(48.3) | 124(51.5) | 242(52.8) | 439(51.6) | 618(53.8) | 1311(53.6) | 1710(51.2) | 1933(51.8) | 1195(52.9) | 6767(52.3) | 7206(52.3) |
Twin *** | 50(33.1) | 66(27.4) | 105(22.9) | 221(26.0) | 108(9.4) | 90(3.7) | 14(0.4) | 0 | 0 | 212(1.6) | 233(1.7) |
Malformation ** | 6(4.0) | 7(2.9) | 7(1.5) | 20(2.4) | 27(2.4) | 35(1.4) | 35(1.1) | 44(1.2) | 23(1.3) | 164(1.3) | 184(1.3) |
Delivery *** | |||||||||||
Spontaneous | 68(45.0) | 116(48.1) | 295(64.4) | 479(56.4) | 815(70.9) | 1821(74.5) | 2961(88.6) | 3341(89.6) | 1946(86.1) | 10884(84.2) | 11363(82.5) |
CS without labor | 53(35.1) | 104(43.2) | 120(26.2) | 277(32.6) | 246(21.4) | 459(18.8) | 201(6.0) | 79(2.1) | 58(2.6) | 1043(8.1) | 1320(9.6) |
CS with labor | 30(19.9) | 21(8.7) | 43(9.4) | 94(11.1) | 88(7.7) | 164(6.7) | 181(5.4) | 309(8.3) | 257(11.4) | 999(7.7) | 1093(7.9) |
Apgar < 7 at 5 min *** | 5(3.3) | 4(1.7) | 2(0.4) | 11(1.3) | 6(0.5) | 7(0.3) | 8(0.2) | 6(0.2) | 6(0.3) | 33(0.3) | 44(0.3) |
Resuscit. at birth *** | 19(12.6) | 40(16.6) | 30(6.6) | 89(10.5) | 61(5.3) | 64(2.6) | 48(1.4) | 50(1.3) | 38(1.7) | 261(2.0) | 350(2.5) |
Admission to NICU *** | |||||||||||
Yes | 81(53.6) | 92(38.2) | 72(15.7) | 245(28.8) | 88(7.7) | 93(3.8) | 74(2.2) | 83(2.2) | 65(2.9) | 403(3.1) | 648(4.7) |
Yes, for resp. disordersa | 37(45.7) | 38(41.3) | 23(31.9) | 98(40.0) | 30(34.1) | 26(28.0) | 14(18.9) | 21(25.3) | 12(18.5) | 103(25.6) | 201(2.2) |
Length of stay | |||||||||||
Median (IQR), days | |||||||||||
Total*** | 7.8(5–13.1) | 6(4.3–10.8) | 4.3(3.3–6.3) | 5.3(3.8–8.1) | 3.6(2.8–4.9) | 3.1(2.6–4.1) | 3(2.5–3.4) | 2.9(2.5–3.4) | 3(2.6–3.6) | 3(2.5–3.8) | 3(2.6–4) |
No NICU*** | 5.1(4.3–6.2) | 4.8(3.9–6.3) | 4(3.2–5.4) | 4.3(3.4–5.8) | 3.4(2.7–4.4) | 3.1(2.6–4) | 2.9(2.5–3.4) | 2.9(2.5–3.4) | 2.9(2.6–3.6) | 3(2.5–3.7) | 3(2.6–3.8) |
NICU*** | 12(8.4–17) | 12(7.1–15.2) | 10.4(7.6–16) | 11.6 (8–15.8) | 8.9(6.6–14.5) | 8.8(6.1–14.3) | 8.7(6.7–10.7) | 7.9(5.6–9.9) | 7.7(5.1–10.2) | 8.4(5.9–12.4) | 9.2(6.7–14.3) |
NICU resp. disorders | 12(8–18.2) | 10.5(6.9–14) | 8.2(5.2–13.6) | 10.2(7–15) | 8.5(5.5–19.2) | 6.9(5.1–12.2) | 8.4(6.9–10.7) | 9.8(8.3–13.2) | 7.9(5.6–11.5) | 8.6(6.1–13.2) | 9.5(6.7–15) |
Mortality *** | 1(0.66) | 3(1.2) | 1(0.22) | 5(0.6) | 6(0.5) | 2(0.08) | 0(0.0) | 1(0.03) | 1(0.04) | 10(0.08) | 15(0.1) |
Age at death | |||||||||||
Median (IQR), days | 11 | 14(1–59) | 8 | 11(8–14) | 1(0–22) | 25(23–27) | - | 2 | 0 | 1.5(0–23) | 8(1–22.5) |