Table 2.
Comparison of criteria for classifying gestational diabetes mellitus (GDM)
| A – Case control study | ||||
|---|---|---|---|---|
| 1999 WHO criteria, n(%) | 2015 NICE criteria, n(%) | 2013 WHO criteria , n(%) | ||
| GDM negative | Subgroup 1 (normal baseline/normal 2-hour results) | 275 (52.2) | 233 (44.6) | 263 (50.3) |
| GDM positive | Subgroup 2 (raised baseline/normal 2-hour results) | 6 (1.1) | 47 (9.0) | 109 (20.8) |
| Subgroup 3 (normal baseline/raised 2-hour results) | 228 (43.6) | 163 (31.2) | 65 (12.4) | |
| Subgroup 4 (raised baseline/raised 2-hour results) | 14 (2.7) | 79 (15.1) | 86 16.4) | |
| B – Cohort study | ||||
| GDM negative | Subgroup 1 (normal baseline/normal 2-hour results) | 6,257 (96.3) | 6,138 (88.6) | 5,983 (86.3) |
| GDM positive | Subgroup 2 (raised baseline/normal 2-hour results) | 11 (0.2) | 130 (1.9) | 564 (8.1) |
| Subgroup 3 (normal baseline/raised 2-hour results) | 625 (9.0) | 493 (7.1) | 194 (2.8) | |
| Subgroup 4 (raised baseline/raised 2-hour results) | 37 (0.5) | 169 (2.4) | 189 (2.7) | |
*2013 WHO criteria classification based on baseline and 120-minute values only