| Literature DB >> 35554962 |
Corine J M Verhoeven1,2,3, José Boer1, Marjolein Kok4, Marianne Nieuwenhuijze5,6, Ank de Jonge7, Lilian L Peters1,8.
Abstract
BACKGROUND: The aim of this observational study was to examine whether the course of pregnancy and birth and accompanying outcomes among low-risk pregnant women changed in the COVID-19 pandemic compared to the prepandemic period.Entities:
Keywords: COVID; low-risk pregnant women; mode of birth; place of birth; pregnancy and birth
Year: 2022 PMID: 35554962 PMCID: PMC9348372 DOI: 10.1111/birt.12646
Source DB: PubMed Journal: Birth ISSN: 0730-7659 Impact factor: 3.081
FIGURE 1Flowchart of the study population
Maternal characteristics of the included VeCaS‐population of low‐risk pregnant women in the prepandemic (2019, n = 2963) and COVID‐19 pandemic period (2020, n = 2950), total n = 5913
| 2019 | 2020 | Statistical differences between 2019–2020 | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Total | Primiparous | Multiparous | Total | Primiparous | Multiparous | Total | Primiparous | Multiparous | |
| n = 2963 | n = 1317 | n = 1646 | n = 2950 | n = 1319 | n = 1631 | ||||
| 100% | 44% | 56% | 100% | 45% | 55% | ||||
| n (%) | n (%) | n (%) | n (%) | n (%) | n (%) |
|
|
| |
| Maternal age (years) | |||||||||
| ≤25 | 288 (9.7) | 210 (15.9) | 78 (4.7) | 267 (9.1) | 191 (14.5) | 76 (4.7) | 0.467 | 0.239 | 0.965 |
| 26–30 | 712 (24.0 | 434 (33.0) | 278 (16.9) | 674 (22.8) | 403 (30.6) | 271 (16.6) | |||
| 31–35 | 1306 (44.1 | 517 (39.3) | 789 (47.9) | 1323 (44.8) | 549 (41.6) | 774 (47.5) | |||
| ≥35 | 657 (22.2) | 156 (11.8) | 501 (30.4 | 686 (23.3) | 176 (13.3) | 510 (31.3) | |||
| Marital status | |||||||||
| Partner/spouse | 2865 (98.0) | 1265 (98.0) | 1600 (98.0) | 2850 (98.1) | 1269 (97.6) | 1581 (98.4) | 0.803 | 0.520 | 0.319 |
| Single | 59 (2.0) | 26 (2.0) | 33 (2.0) | 56 (1.9) | 31 (2.4) | 25 (1.6) | |||
| Missing | 39 | 26 | 13 | 44 | 19 | 25 | |||
| Socioeconomic status | |||||||||
| Low (<p25) | 788 (26.8) | 371 (28.3) | 417 (25.6) | 750 (25.6) | 333 (25.4) | 417 (25.8) | 0.414 | 0.247 | 0.428 |
| Medium (p25‐p75) | 1602 (54.4) | 698 (53.2) | 904 (55.4) | 1596 (54.5) | 729 (55.6) | 867 (53.6) | |||
| High (>p75) | 554 (18.8) | 244 (18.6) | 310 (19.0) | 585 (20.0) | 250 (19.1) | 335 (20.7) | |||
| Missing | 19 | 4 | 15 | 19 | 7 | 12 | |||
| Level of urbanization | |||||||||
| Extremely urbanized | 358 (12.1) | 192 (14.6) | 166 (10.1) | 328 (11.1) | 169 (12.8) | 159 (9.8) | 0.199 | 0.335 | 0.671 |
| Strongly urbanized | 618 (20.9) | 289 (22.0) | 329 (20.1) | 629 (21.4) | 301 (22.9) | 328 (20.2) | |||
| Moderately urbanized | 701 (23.7) | 302 (22.9) | 399 (24.4) | 645 (21.9) | 274 (20.8) | 371 (22.8) | |||
| Hardly urbanized | 745 (25.2) | 312 (23.7) | 433 (26.4) | 804 (27.3) | 339 (25.7) | 465 (28.6) | |||
| Not urbanized | 532 (18.0) | 221 (16.8) | 311 (19.0) | 538 (18.3) | 234 (17.8) | 304 (18.7) | |||
| Missing | 9 | 1 | 8 | 6 | 2 | 4 | |||
| Migration Background | |||||||||
| Dutch | 2312 (80.3) | 1032 (81.1) | 1280 (79.6) | 2288 (79.0) | 1033 (80.3) | 1255 (77.9) | 0.074 | 0.286 | 0.065 |
| Western Non‐Dutch | 208 (7.2) | 101 (7.9) | 107 (6.7) | 252 (8.7) | 105 (8.2) | 147 (9.1) | |||
| Non‐Western | 348 (12.1) | 136 (10.7) | 212 (13.2) | 336 (11.6) | 138 (10.7) | 198 (12.3) | |||
| Other | 12 (0.4) | 3 (0.2) | 9 (0.6) | 21 (0.7) | 10 (0.8) | 11 (0.7) | |||
| Missing | 83 | 45 | 38 | 53 | 33 | 20 | |||
| Smoking during pregnancy | |||||||||
| No | 2551 (88.5) | 1120 (87.0) | 1431 (89.7) | 2530 (88.0) | 1102 (85.6) | 1428 (89.9) | 0.371 | 0.159 | 0.969 |
| Stopped in first trimester | 181 (6.3) | 98 (7.6) | 83 (5.2) | 205 (7.1) | 124 (9.6) | 81 (5.1) | |||
| Yes | 152 (5.3) | 70 (5.4) | 82 (5.1) | 141 (4.9) | 62 (4.8) | 79 (5.0) | |||
| Missing | 79 | 29 | 50 | 74 | 31 | 43 | |||
| Prepregnancy body mass index | |||||||||
| Underweight (<18.5) | 76 (2.6) | 38 (2.9) | 38 (2.4) | 74 (2.5) | 39 (3.0) | 35 (2.2) | 0.982 | 0.226 | 0.468 |
| Normal weight (18.5–24.9) | 1783 (60.9) | 848 (64.7) | 935 (57.8) | 1766 (60.5) | 818 (62.3) | 948 (59.0) | |||
| Pre‐obesity (25–29.9) | 712 (24.3) | 280 (21.4) | 432 (26.7) | 725 (24.8) | 312 (23.8) | 413 (25.7) | |||
| Obesity (>30) | 356 (12.2) | 144 (11.0) | 212 (13.1) | 354 (12.2) | 144 (10.9) | 210 (13.1) | |||
| Missing | 36 | 7 | 29 | 31 | 6 | 25 | |||
Level of urbanization was categorized as: (a) extremely urbanized (≥2500 addresses/km2), (b) strongly urbanized (1500–2500 addresses/km2), (c) moderately urbanized (1000–1500 addresses/km2), (d) hardly urbanized (500–1000 addresses/km2), and (5) not urbanized (<500 addresses/km2).
For migration background, the definitions of Statistics Netherlands (Centraal Bureau Statistiek) were applied. Migration background was based on the woman’s parents’ country of birth or her own country of birth. Western is defined as originating from a country in Europe (excluding Turkey), North America and Oceania, or from Indonesia or Japan.
Pregnancy and birth characteristics of the included VeCaS‐population of pregnant women in the prepandemic (2019, n = 2963) and COVID‐19 pandemic period (2020, n = 2950), total n = 5913
| 2019 | 2020 | Statistical differences between 2019–2020 | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Total | Primiparous | Multiparous | Total | Primiparous | Multiparous | Total | Primiparous | Multiparous | |
| n = 2963 | n = 1317 | n = 1646 | n = 2950 | n = 1319 | n = 1631 | ||||
| 100% | 44% | 56% | 100% | 45% | 55% | ||||
| n (%) | n (%) | n (%) | n (%) | n (%) | n (%) |
|
|
| |
| Pregnancy complications | |||||||||
| High blood pressure | 361 (12.2) | 227 (17.2) | 134 (8.1) | 365 (12.4) | 208 (15.8) | 157 (9.6) | 0.825 | 0.310 | 0.135 |
| Diabetes mellitus | 115 (3.6) | 378 (2.9) | 77 (4.7) | 119 (4.0) | 46 (3.5) | 73 (4.5) | 0.763 | 0.379 | 0.782 |
| Suspected fetal growth restriction | 111 (3.7) | 62 (4.7) | 49 (3.0) | 133 (4.5) | 62 (4.7) | 71 (4.4) | 0.141 | 0.993 |
|
| Placenta previa | 19 (0.6) | 7 (0.5) | 12 (0.7) | 24 (0.8) | 11 (0.8 | 13 (0.8) | 0.436 | 0.346 | 0.823 |
| Level of care at start delivery | |||||||||
| Primary care | 1685 (56.9) | 719 (54.6) | 966 (58.7) | 1678 (56.9) | 726 (55.0) | 952 (58.4) | 0.992 | 0.817 | 0.853 |
| Secondary care | 1278 (43.1) | 598 (45.4) | 680 (41.3) | 1272 (43.1) | 593 (45.0) | 679 (41.6) | |||
| Onset of labor | |||||||||
| Spontaneous | 2191 (75.0) | 967 (74.9) | 1224 (75.1) | 2092 (72.4) | 936 (73.1) | 1156 (71.8) | 0.068 | 0.513 | 0.103 |
| Induction of labor | 561 (19.2) | 270 (20.9) | 291 (17.9) | 620 (21.4) | 292 (22.8) | 328 (20.4) | |||
| Planned cesarean section | 168 (5.8) | 54 (4.2) | 114 (7.0) | 178 (6.2) | 53 (4.1) | 125 (7.8) | |||
| Missing | 43 | 26 | 17 | 60 | 38 | 22 | |||
| Augmentation of labor | |||||||||
| No | 2546 (87.2) | 1060 (82.0) | 1486 (91.3) | 2523 (86.9) | 1037 (80.1) | 1486 (92.3) | 0.698 | 0.202 | 0.290 |
| Yes | 374 (12.8) | 232 (18.0) | 142 (8.7) | 382 (13.1) | 258 (19.9) | 124 (7.7) | |||
| Missing | 43 | 25 | 18 | 45 | 24 | 21 | |||
| Pain medication | |||||||||
| None | 2064 (76.2) | 799 (65.4) | 1265 (85.1) | 2025 (73.6) | 768 (61.1) | 1257 (84.0) |
|
| 0.703 |
| Epidural | 408 (15.1) | 294 (24.1) | 114 (7.7) | 466 (16.9) | 354 (28.2) | 112 (7.5) | |||
| Remifentanil | 190 (7.0) | 96 (7.9) | 94 (6.3) | 231 (8.4) | 117 (09.3) | 114 (7.6) | |||
| Pethidine | 37 (1.4) | 26 (2.1) | 11 (0.7) | 23 (0.8) | 13 (1.0) | 10 (0.7) | |||
| Gas and air | 9 (0.3) | 7 (0.5) | 2 (0.1) | 8 (0.3) | 5 (0.4) | 3 (0.2) | |||
| Missing | 87 | 41 | 46 | 19 | 9 | 10 | |||
| Preferred place of birth | |||||||||
| Home birth | 641 (22.8) | 253 (20.2) | 388 (24.9) | 718 (26.0) | 304 (24.8) | 414 (27.1) |
|
| 0.340 |
| Midwife‐led hospital birth | 1737 (61.7) | 915 (73.1) | 822 (52.7) | 1549 (57.8) | 836 (68.1) | 758 (49.5) | |||
| Obstetric unit | 369 (13.1) | 53 (4.2) | 316 (20.2) | 374 (13.6) | 55 (4.5) | 319 (20.8) | |||
| Not decided | 66 (2.3) | 31 (2.5) | 35 (2.2) | 72 (2.6) | 33 (2.7) | 39 (2.5) | |||
| Missing | 150 | 65 | 85 | 192 | 91 | 101 | |||
| Actual place of birth | |||||||||
| Home birth | 580 (20.1) | 151 (11.9) | 429 (26.5) | 684 (23.8) | 188 (14.8) | 496 (31.0) |
| 0.076 |
|
| Midwife‐led hospital birth | 543 (18.8) | 165 (13.0) | 378 (23.4) | 417 (14.5) | 149 (11.7) | 268 (16.7) | |||
| Obstetric unit | 1768 (61.2) | 957 (75.2) | 811 (50.1) | 1770 (61.7) | 933 (73.5) | 837 (52.3) | |||
| Missing | 72 | 44 | 28 | 79 | 49 | 30 | |||
| Mode of birth | |||||||||
| Spontaneous vaginal birth | 2320 (80.1) | 903 (71.0) | 1417 (87.3) | 2325 (81.1) | 920 (72.6) | 1405 (87.8) | 0.385 | 0.626 | 0.279 |
| Assisted vaginal birth | 212 (7.3) | 185 (14.6) | 27 (1.7) | 180 (6.3) | 162 (12.8) | 18 (1.1) | |||
| Planned cesarean section | 168 (5.8) | 54 (4.2) | 114 (7.0) | 178 (6.2) | 53 (4.2) | 125 (7.8) | |||
| Emergency cesarean section | 195 (6.7) | 129 (10.1) | 66 (4.1) | 185 (6.5) | 133 (10.5) | 52 (3.3) | |||
| Missing | 68 | 46 | 22 | 82 | 51 | 31 | |||
Induction of labor comprises the following: amniotomy, oxytocin, pharmacological priming (misoprostol or PgE2), and mechanical priming with balloon catheter.
Pain medication during first stage of labor, calculated for vaginal births and emergency cesarean sections. Planned cesarean sections excluded.
Mode of birth: Assisted vaginal birth includes a vacuum or forceps extraction.
Values in bold indicate statistically significant results.
Maternal and infant health outcomes of the included VeCaS‐population of women in the COVID‐19 pandemic period (2020) versus the prepandemic period (2019), total n = 5913
| 2019 | 2020 | Statistical differences between 2019–2020 | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Total | Primiparous | Multiparous | Total | Primiparous | Multiparous | Total | Primiparous | Multiparous | |
| n = 2963 | n = 1317 | n = 1646 | n = 2950 | n = 1319 | n = 1631 | ||||
| 100% | 44% | 56% | 100% | 45% | 55% | ||||
| n (%) | n (%) | n (%) | n (%) | n (%) | n (%) |
|
|
| |
| Maternal health outcomes | |||||||||
| Episiotomy | |||||||||
| No | 2101 (82.1) | 748 (67.6) | 1353 (93.1) | 2149 (84.4) | 780 (70.5) | 1369 (95.0) |
| 0.141 |
|
| Yes | 458 (17.9) | 358 (32.4) | 100 (6.9) | 398 (15.6) | 326 (29.5) | 72 (5.0) | |||
| 3rd/4th degree tear | |||||||||
| No | 2489 (97.2) | 1064 (96.1) | 1425 (98.1) | 2464 (96.7) | 1047 (94.7) | 1417 (98.3) | 0.311 | 0.141 | 0.596 |
| Yes | 71 (2.8) | 43 (3.9) | 28 (1.9) | 83 (3.3) | 59 (5.3) | 24 (1.7) | |||
| Blood loss after delivery in ml | |||||||||
| ≤499 | 2167 (76.5) | 894 (71.7) | 1273 (80.4) | 2155 (77.0) | 877 (71.0) | 1278 (81.8) | 0.816 | 0.167 | 0.443 |
| 500–999 | 574 (20.3) | 308 (24.7) | 266 (16.8) | 549 (19.6) | 299 (24.2) | 250 (16.0) | |||
| 1000–1999 | 61 (2.2) | 29 (2.3) | 32 (2.0) | 68 (2.4) | 47 (3.8) | 21 (1.3) | |||
| ≥2000 | 29 (1.0) | 16 (1.3) | 13 (0.8) | 26 (0.9) | 12 (1.0) | 14 (0.9) | |||
| Missing | 132 | 70 | 62 | 152 | 84 | 68 | |||
| Infant health outcomes | |||||||||
| Gestation at birth | |||||||||
| Preterm (<37 weeks) | 137 (4.6) | 84 (6.4) | 53 (3.2) | 124 (4.2) | 88 (6.7) | 36 (2.2) | |||
| Extremely preterm (< 28 weeks) | 5 (0.2) | 4 (0.3) | 1 (0.1) | 3 (0.1) | 2 (0.2) | 1 (0.1) | 0.431 | 0.760 | 0.075 |
| Very preterm (28–31 + 6) | 12 (0.4) | 5 (0.4) | 7 (0.4) | 19 (0.6) | 14 (1.1) | 5 (0.3) | |||
| Moderate to late preterm (32–36 + 6) | 120 (4.0) | 75 (5.7) | 45 (2.7) | 102 (3.5) | 72 (5.5) | 30 (1.8) | |||
| Term (≥37 weeks) | 2826 (95.4) | 1233 (93.6) | 1593 (96.8) | 2826 (95.8) | 1231 (93.3) | 1595 (97.8) | |||
| Term (37–41 + 6) | 2779 (93.8) | 1206 (91.6) | 1573 (95.6) | 2787 (94.5) | 1205 (91.4) | 1582 (97.0) | |||
| Post term (≥42 weeks) | 47 (1.6) | 27 (2.1) | 20 (1.2) | 39 (1.3) | 26 (2.0) | 13 (0.8) | |||
| Gender | |||||||||
| Female | 1392 (47.3) | 621 (47.7) | 771 (47.0) | 1396 (47.6) | 622 (47.8) | 774 (47.5) | 0.781 | 0.954 | 0.749 |
| Male | 1552 (52.7) | 682 (52.3) | 870 (53.0) | 1534 (52.4) | 680 (52.2) | 854 (52.5) | |||
| Missing | 19 | 14 | 5 | 20 | 17 | 3 | |||
| Birthweight (percentiles) | |||||||||
| <p10 | 284 (9.8) | 187 (14.7) | 97 (6.0) | 268 (9.3) | 175 (13.8) | 93 (5.8) | 0.517 | 0.538 | 0.792 |
| ≥p10 | 2611 (90.2) | 1088 (85.3) | 1523 (94.0) | 2611 (90.7) | 1092 (86.2) | 1519 (94.2) | |||
| Missing | 68 | 42 | 26 | 71 | 52 | 19 | |||
| Apgar score after 5 min | |||||||||
| 0–3 | 50 (1.7) | 31 (2.4) | 19 (1.2) | 38 (1.3) | 16 (1.3) | 22 (1.4) | 0.437 | 0.081 | 0.565 |
| 4–6 | 101 (3.5) | 55 (4.3) | 46 (2.8) | 97 (3.4) | 60 (4.7) | 37 (2.3) | |||
| 7–10 | 2753 (94.8) | 1191 (93.3) | 1562 (96.0) | 2750 (95.3) | 1200 (94.0) | 1550 (96.3) | |||
| Missing | 59 | 40 | 19 | 65 | 43 | 22 | |||
| Perinatal mortality (≤28 days postpartum) | |||||||||
| No | 2924 (99.7) | 1291 (99.4) | 1633 (99.9) | 2917 (99.7) | 1297 (99.7) | 1620 (99.8) | 0.641 | 0.246 | 0.409 |
| Yes | 10 (0.3) | 8 (0.6) | 2 (0.1) | 8 (0.3) | 4 (0.3) | 4 (0.2) | |||
| Missing | 29 | 18 | 11 | 25 | 18 | 7 | |||
Birthweight in percentiles according to the perined birthweight charts.
The maternal outcomes episiotomy and 3rd and 4th degree tears are calculated for vaginal births only (total population n = 2560 (2019) and n = 2547 (2020). * Values in bold indicate statistically significant results
Values in bold indicate statistically significant results.