Table 4.
Frequency of pregnancy complications in all women using Canadian criteria to classify as: missed GDMs (pre-COVID GDM, post-COVID non-GDM), post-COVID GDM, non-GDM (according to pre-COVID criteria). The column “% GDM outcomes missed post COVID” lists the percentage of each outcome which occurred amongst women classified as GDM using the pre COVID process and criteria, but would remain undetected using the post COVID process and criteria.
| Outcome | Missed GDM | Post-COVID GDM | % GDM Outcomes Missed Post-COVID& | Non-GDM by both pre and post-criteria |
|---|---|---|---|---|
| N | 524 | 99 | – | 5351 |
| Pregnancy-related hypertension# | 128 (26.3%) | 25 (26.3%) | 83.7% | 791 (15.2%)*** |
| Preterm# | 52 (9.9%) | 8 (8.1%) | 86.7% | 289 (5.4%)*** |
| Birthweight (g)^ | 3485 (561) | 3478 (559) | – | 3367 (513) *** |
| Large-for-gestational age# | 90 (17.2%) | 16 (16.3%) | 84.9% | 460 (8.6%)*** |
| Primary Cesarean section# | 110 (24.9%) | 21 (25.3%) | 84.0% | 828 (17.5%)*** |
| Neonatal hyperinsulinemia# | 85 (18.4%) | 18 (20.9%) | 82.5% | 356 (7.6%)*** |
| Neonatal hypoglycemia# | 87 (21.1%) | 18 (26.1%) | 82.9% | 683 (17.1%) |
| Neonatal fat mass (g)^ | 459 (185) | 440 (182) | – | 390 (165) *** |
| Neonatal adiposity# | 76 (18.3%) | 18 (22.8%) | 80.9% | 368 (8.5%)*** |
#
n (%);
^
mean (standard deviation);
&
calculated as number of missed outcomes / total number of outcomes;
***
p < 0.001 in comparison to missed GDMs; GDM gestational diabetes mellitus; COVID coronavirus disease.