Table 5.
Prevalence rates of GDM in risk groups of pregnant women stratified by preconception BMI and maternal age.
| Preconception Obesity | Preconception Overweight | Preconception Normal Weight | A vs. B | B vs. C | C vs. D | D vs. E | E vs. F | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (A) Maternal Age ≥35 yr |
(B) Maternal Age <35 yr |
(C) Maternal Age ≥35 yr |
(D) Maternal Age <35 yr |
(E) Maternal Age ≥35 yr |
(F) Maternal Age <35 yr |
||||||||||||
| N | % | N | % | N | % | N | % | N | % | N | % | p Value | |||||
| NGT | 67 | 48.6% | 174 | 61.5% | 182 | 62.8% | 389 | 77.0% | 681 | 79.6% | 1258 | 83.6% | * | ns | *** | ns | * |
| GDM | 71 | 51.4% | 109 | 38.5% | 108 | 37.2% | 116 | 23.0% | 174 | 20.4% | 247 | 16.4% | |||||
| Total | 138 | 283 | 290 | 505 | 855 | 1505 | |||||||||||
Preconception obesity was defined by a BMI ≥ 30 kg/m2, preconception overweight by a BMI 25–29.9 kg/m2, preconception normal weight by a BMI < 25 kg/m2. * indicates statistical significance with p < 0.05; *** indicates statistical significance with p < 0.001; ns: non-significant; p values were calculated using the χ2 test. Women with missing values for one or both preconception variables (n = 280) were excluded.